Finding the Fourth Proportional to 713,123.52, 984,118 and 390,826.48

Step by Step Solution

1. Step 1: Write the proportion equation
   713,123.52 : 984,118 = 390,826.48 : x
2. Step 2: Convert to fraction form
   713,123.52/984,118 = 390,826.48/x
3. Step 3: Cross multiply
   713,123.52x = 984,118 × 390,826.48
4. Step 4: Simplify right side
   713,123.52x = 384,619,373,844.64
5. Step 5: Solve for x
   x = 384,619,373,844.64/713,123.52
6. Step 6: Final answer
   x = 539,344.68