Finding the Fourth Proportional to 730,499.31, 1,008,087.42 and 408,209.42

Step by Step Solution

1. Step 1: Write the proportion equation
   730,499.31 : 1,008,087.42 = 408,209.42 : x
2. Step 2: Convert to fraction form
   730,499.31/1,008,087.42 = 408,209.42/x
3. Step 3: Cross multiply
   730,499.31x = 1,008,087.42 × 408,209.42
4. Step 4: Simplify right side
   730,499.31x = 411,510,785,078.50
5. Step 5: Solve for x
   x = 411,510,785,078.50/730,499.31
6. Step 6: Final answer
   x = 563,328.10