To find the diameter of a circle from its circumference, you can use the formula:
\[ C = \pi \times d \]
where \( C \) is the circumference and \( d \) is the diameter. Rearranging this formula to solve for the diameter, we get:
\[ d = \frac{C}{\pi} \]
Given that the circumference \( C \) is 7,459 miles and using \( \pi \approx 3.14 \):
\[ d = \frac{7459}{3.14} \]
Calculating this gives:
\[ d \approx 2375.158 \]
Rounding to the nearest hundredths place:
\[ d \approx 2375.16 \]
Thus, the diameter of the circle is approximately 2375.16 miles.