4.496911993 x 10^9 / 2.8722791173 x 10^9

= 1.567067167

To divide these two numbers in scientific notation, you need to divide the two numerical values and subtract the exponents:

First, divide the numerical values:
(4.496911993 x 10^9) / (2.8722791173 x 10^9) = 1.56332

Second, subtract the exponents:
10^9 / 10^9 = 1

So the final result is 1.56332 x 10^1.

To divide two numbers written in scientific notation, you can simplify the process by dividing the coefficients and subtracting the exponents. Let's apply this method to the given example:

1. Divide the coefficients: 4.496911993 / 2.8722791173 = 1.56409854812.

2. Subtract the exponents: 9 - 9 = 0.

3. Rewrite the result in scientific notation: 1.56409854812 x 10^0.

Since any number raised to the power of zero is equal to 1, we can simplify the final answer to:
1.56409854812.