Finding the Fourth Proportional to 1,145,402.72, 1,581,446.52 and 715,875.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145,402.72 : 1,581,446.52 = 715,875.92 : x
2. Step 2: Convert to fraction form
   1,145,402.72/1,581,446.52 = 715,875.92/x
3. Step 3: Cross multiply
   1,145,402.72x = 1,581,446.52 × 715,875.92
4. Step 4: Simplify right side
   1,145,402.72x = 1,132,119,482,435.80
5. Step 5: Solve for x
   x = 1,132,119,482,435.80/1,145,402.72
6. Step 6: Final answer
   x = 988,403.00