Finding the Fourth Proportional to 948,291.31, 1,308,664.77 and 540,384.42

Step by Step Solution

1. Step 1: Write the proportion equation
   948,291.31 : 1,308,664.77 = 540,384.42 : x
2. Step 2: Convert to fraction form
   948,291.31/1,308,664.77 = 540,384.42/x
3. Step 3: Cross multiply
   948,291.31x = 1,308,664.77 × 540,384.42
4. Step 4: Simplify right side
   948,291.31x = 707,182,052,710.88
5. Step 5: Solve for x
   x = 707,182,052,710.88/948,291.31
6. Step 6: Final answer
   x = 745,743.47