Finding the Fourth Proportional to 1,555,185.18, 2,145,895.83 and 866,706.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,555,185.18 : 2,145,895.83 = 866,706.78 : x
2. Step 2: Convert to fraction form
   1,555,185.18/2,145,895.83 = 866,706.78/x
3. Step 3: Cross multiply
   1,555,185.18x = 2,145,895.83 × 866,706.78
4. Step 4: Simplify right side
   1,555,185.18x = 1,859,862,465,034.73
5. Step 5: Solve for x
   x = 1,859,862,465,034.73/1,555,185.18
6. Step 6: Final answer
   x = 1,195,910.61