Finding the Fourth Proportional to 3,686,213.71, 5,529,315.81 and 990,538.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686,213.71 : 5,529,315.81 = 990,538.98 : x
2. Step 2: Convert to fraction form
   3,686,213.71/5,529,315.81 = 990,538.98/x
3. Step 3: Cross multiply
   3,686,213.71x = 5,529,315.81 × 990,538.98
4. Step 4: Simplify right side
   3,686,213.71x = 5,477,002,842,535.27
5. Step 5: Solve for x
   x = 5,477,002,842,535.27/3,686,213.71
6. Step 6: Final answer
   x = 1,485,807.19