Finding the Fourth Proportional to 1,025,413.83, 1,538,124.53 and 315,436.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025,413.83 : 1,538,124.53 = 315,436.95 : x
2. Step 2: Convert to fraction form
   1,025,413.83/1,538,124.53 = 315,436.95/x
3. Step 3: Cross multiply
   1,025,413.83x = 1,538,124.53 × 315,436.95
4. Step 4: Simplify right side
   1,025,413.83x = 485,181,308,886.20
5. Step 5: Solve for x
   x = 485,181,308,886.20/1,025,413.83
6. Step 6: Final answer
   x = 473,156.59