Finding the Fourth Proportional to 713,118.50, 984,111.06 and 390,821.52

Step by Step Solution

1. Step 1: Write the proportion equation
   713,118.50 : 984,111.06 = 390,821.52 : x
2. Step 2: Convert to fraction form
   713,118.50/984,111.06 = 390,821.52/x
3. Step 3: Cross multiply
   713,118.50x = 984,111.06 × 390,821.52
4. Step 4: Simplify right side
   713,118.50x = 384,611,780,318.01
5. Step 5: Solve for x
   x = 384,611,780,318.01/713,118.50
6. Step 6: Final answer
   x = 539,337.82