Finding the Fourth Proportional to 951,229.72, 1,312,662.18 and 521,500.42

Step by Step Solution

1. Step 1: Write the proportion equation
   951,229.72 : 1,312,662.18 = 521,500.42 : x
2. Step 2: Convert to fraction form
   951,229.72/1,312,662.18 = 521,500.42/x
3. Step 3: Cross multiply
   951,229.72x = 1,312,662.18 × 521,500.42
4. Step 4: Simplify right side
   951,229.72x = 684,553,878,188.12
5. Step 5: Solve for x
   x = 684,553,878,188.12/951,229.72
6. Step 6: Final answer
   x = 719,651.48