Finding the Fourth Proportional to 813,061.50, 1,122,414.90 and 571,551.10

Step by Step Solution

1. Step 1: Write the proportion equation
   813,061.50 : 1,122,414.90 = 571,551.10 : x
2. Step 2: Convert to fraction form
   813,061.50/1,122,414.90 = 571,551.10/x
3. Step 3: Cross multiply
   813,061.50x = 1,122,414.90 × 571,551.10
4. Step 4: Simplify right side
   813,061.50x = 641,517,470,751.39
5. Step 5: Solve for x
   x = 641,517,470,751.39/813,061.50
6. Step 6: Final answer
   x = 789,014.69