Finding the Fourth Proportional to 859,105.52, 1,185,527.24 and 515,131.30

Step by Step Solution

1. Step 1: Write the proportion equation
   859,105.52 : 1,185,527.24 = 515,131.30 : x
2. Step 2: Convert to fraction form
   859,105.52/1,185,527.24 = 515,131.30/x
3. Step 3: Cross multiply
   859,105.52x = 1,185,527.24 × 515,131.30
4. Step 4: Simplify right side
   859,105.52x = 610,702,188,326.61
5. Step 5: Solve for x
   x = 610,702,188,326.61/859,105.52
6. Step 6: Final answer
   x = 710,858.18