Finding the Fourth Proportional to 2,692,002.57, 4,038,785.69 and 870,328.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,692,002.57 : 4,038,785.69 = 870,328.61 : x
2. Step 2: Convert to fraction form
   2,692,002.57/4,038,785.69 = 870,328.61/x
3. Step 3: Cross multiply
   2,692,002.57x = 4,038,785.69 × 870,328.61
4. Step 4: Simplify right side
   2,692,002.57x = 3,515,070,711,120.02
5. Step 5: Solve for x
   x = 3,515,070,711,120.02/2,692,002.57
6. Step 6: Final answer
   x = 1,305,745.67