Finding the Fourth Proportional to 2,661,577.74, 3,993,510.33 and 865,011.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661,577.74 : 3,993,510.33 = 865,011.78 : x
2. Step 2: Convert to fraction form
   2,661,577.74/3,993,510.33 = 865,011.78/x
3. Step 3: Cross multiply
   2,661,577.74x = 3,993,510.33 × 865,011.78
4. Step 4: Simplify right side
   2,661,577.74x = 3,454,433,479,001.69
5. Step 5: Solve for x
   x = 3,454,433,479,001.69/2,661,577.74
6. Step 6: Final answer
   x = 1,297,889.38