Finding the Fourth Proportional to 2,661,574.74, 3,993,505.83 and 865,008.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661,574.74 : 3,993,505.83 = 865,008.78 : x
2. Step 2: Convert to fraction form
   2,661,574.74/3,993,505.83 = 865,008.78/x
3. Step 3: Cross multiply
   2,661,574.74x = 3,993,505.83 × 865,008.78
4. Step 4: Simplify right side
   2,661,574.74x = 3,454,417,605,931.19
5. Step 5: Solve for x
   x = 3,454,417,605,931.19/2,661,574.74
6. Step 6: Final answer
   x = 1,297,884.88