Finding the Fourth Proportional to 1,280,013.57, 1,766,413.32 and 707,053.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280,013.57 : 1,766,413.32 = 707,053.74 : x
2. Step 2: Convert to fraction form
   1,280,013.57/1,766,413.32 = 707,053.74/x
3. Step 3: Cross multiply
   1,280,013.57x = 1,766,413.32 × 707,053.74
4. Step 4: Simplify right side
   1,280,013.57x = 1,248,949,144,291.82
5. Step 5: Solve for x
   x = 1,248,949,144,291.82/1,280,013.57
6. Step 6: Final answer
   x = 975,731.17