1. **State the problem:** We need to find how many rides each driver completes per month if there are $1.12 \times 10^6$ drivers and $4.536 \times 10^8$ rides in total. 2. **Formula:** The number of rides per driver is given by dividing the total rides by the total drivers: $$\text{Rides per driver} = \frac{\text{Total rides}}{\text{Total drivers}}$$ 3. **Substitute the values:** $$\frac{4.536 \times 10^8}{1.12 \times 10^6}$$ 4. **Divide the coefficients and subtract exponents:** $$= \frac{4.536}{1.12} \times 10^{8-6} = 4.05 \times 10^2$$ 5. **Interpretation:** Each driver completes approximately $4.05 \times 10^2 = 405$ rides per month. 6. **Answer choice:** The closest option is $4.05 \times 10^2$.