Finding the Fourth Proportional to 729,700.18, 1,007,086.98 and 407,431.15

Step by Step Solution

1. Step 1: Write the proportion equation
   729,700.18 : 1,007,086.98 = 407,431.15 : x
2. Step 2: Convert to fraction form
   729,700.18/1,007,086.98 = 407,431.15/x
3. Step 3: Cross multiply
   729,700.18x = 1,007,086.98 × 407,431.15
4. Step 4: Simplify right side
   729,700.18x = 410,318,606,411.43
5. Step 5: Solve for x
   x = 410,318,606,411.43/729,700.18
6. Step 6: Final answer
   x = 562,311.23