Finding the Fourth Proportional to 483,111.52, 721,413.99 and 394,540.72

Step by Step Solution

1. Step 1: Write the proportion equation
   483,111.52 : 721,413.99 = 394,540.72 : x
2. Step 2: Convert to fraction form
   483,111.52/721,413.99 = 394,540.72/x
3. Step 3: Cross multiply
   483,111.52x = 721,413.99 × 394,540.72
4. Step 4: Simplify right side
   483,111.52x = 284,627,195,032.67
5. Step 5: Solve for x
   x = 284,627,195,032.67/483,111.52
6. Step 6: Final answer
   x = 589,154.23