To arrive at the solution for the population density of Phoenix, I followed these steps:
1. **Understanding the Formula**: The formula for population density is:
\[
\text{Population Density} = \frac{\text{Population}}{\text{Area}}
\]
This means you take the total number of people living in an area and divide it by the size of that area.
2. **Gathering Information**: I extracted the relevant data provided:
- **Population**: 1,445,632 people
- **Area**: 450 square miles
3. **Applying the Formula**: I substituted the provided figures into the population density formula:
\[
\text{Population Density} = \frac{1,445,632 \text{ people}}{450 \text{ square miles}}
\]
4. **Performing the Calculation**: I divided 1,445,632 by 450 to get:
\[
\text{Population Density} \approx 3,210.29 \text{ people per square mile}
\]
5. **Rounding (if necessary)**: The population density is commonly rounded to a reasonable figure, so it can be stated as approximately 3,210 people per square mile for easier comprehension.
This straightforward approach allowed me to calculate the population density accurately.