To find the diameter of a circle given its circumference, you can use the formula for the circumference of a circle:
\[ C = \pi \times d \]
Where:
- \( C \) is the circumference
- \( \pi \) is approximately 3.14
- \( d \) is the diameter
We can rearrange this formula to solve for the diameter:
\[ d = \frac{C}{\pi} \]
Substituting in the given circumference:
\[ d = \frac{7,459 \text{ miles}}{3.14} \]
Now, let's calculate:
\[ d = \frac{7,459}{3.14} \approx 2,374.84 \text{ miles} \]
Rounding to the nearest hundredths place, the diameter is:
\[ \boxed{2374.84} \text{ miles} \]