Finding the Fourth Proportional to 2,571,736.38, 3,854,904.18 and 865,287.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,571,736.38 : 3,854,904.18 = 865,287.28 : x
2. Step 2: Convert to fraction form
   2,571,736.38/3,854,904.18 = 865,287.28/x
3. Step 3: Cross multiply
   2,571,736.38x = 3,854,904.18 × 865,287.28
4. Step 4: Simplify right side
   2,571,736.38x = 3,335,599,552,572.83
5. Step 5: Solve for x
   x = 3,335,599,552,572.83/2,571,736.38
6. Step 6: Final answer
   x = 1,297,022.35