Finding the Fourth Proportional to 792,091.52, 1,188,358.72 and 259,986.88

Step by Step Solution

1. Step 1: Write the proportion equation
   792,091.52 : 1,188,358.72 = 259,986.88 : x
2. Step 2: Convert to fraction form
   792,091.52/1,188,358.72 = 259,986.88/x
3. Step 3: Cross multiply
   792,091.52x = 1,188,358.72 × 259,986.88
4. Step 4: Simplify right side
   792,091.52x = 308,957,675,933.59
5. Step 5: Solve for x
   x = 308,957,675,933.59/792,091.52
6. Step 6: Final answer
   x = 390,053.00