Finding the Fourth Proportional to 861,059.34, 1,188,426.36 and 570,158.10

Step by Step Solution

1. Step 1: Write the proportion equation
   861,059.34 : 1,188,426.36 = 570,158.10 : x
2. Step 2: Convert to fraction form
   861,059.34/1,188,426.36 = 570,158.10/x
3. Step 3: Cross multiply
   861,059.34x = 1,188,426.36 × 570,158.10
4. Step 4: Simplify right side
   861,059.34x = 677,590,915,407.52
5. Step 5: Solve for x
   x = 677,590,915,407.52/861,059.34
6. Step 6: Final answer
   x = 786,927.08