Finding the Fourth Proportional to 807,063.68, 1,113,854.52 and 521,414.72

Step by Step Solution

1. Step 1: Write the proportion equation
   807,063.68 : 1,113,854.52 = 521,414.72 : x
2. Step 2: Convert to fraction form
   807,063.68/1,113,854.52 = 521,414.72/x
3. Step 3: Cross multiply
   807,063.68x = 1,113,854.52 × 521,414.72
4. Step 4: Simplify right side
   807,063.68x = 580,780,142,666.53
5. Step 5: Solve for x
   x = 580,780,142,666.53/807,063.68
6. Step 6: Final answer
   x = 719,621.21