Finding the Fourth Proportional to 864,139.27, 1,192,179.59 and 541,287.31

Step by Step Solution

1. Step 1: Write the proportion equation
   864,139.27 : 1,192,179.59 = 541,287.31 : x
2. Step 2: Convert to fraction form
   864,139.27/1,192,179.59 = 541,287.31/x
3. Step 3: Cross multiply
   864,139.27x = 1,192,179.59 × 541,287.31
4. Step 4: Simplify right side
   864,139.27x = 645,311,683,308.00
5. Step 5: Solve for x
   x = 645,311,683,308.00/864,139.27
6. Step 6: Final answer
   x = 746,768.15