Finding the Fourth Proportional to 951,255.78, 1,312,697.91 and 521,526.42

Step by Step Solution

1. Step 1: Write the proportion equation
   951,255.78 : 1,312,697.91 = 521,526.42 : x
2. Step 2: Convert to fraction form
   951,255.78/1,312,697.91 = 521,526.42/x
3. Step 3: Cross multiply
   951,255.78x = 1,312,697.91 × 521,526.42
4. Step 4: Simplify right side
   951,255.78x = 684,606,641,543.78
5. Step 5: Solve for x
   x = 684,606,641,543.78/951,255.78
6. Step 6: Final answer
   x = 719,687.23