Finding the Fourth Proportional to 2,555.85, 3,527.11 and 1,436.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.85 : 3,527.11 = 1,436.78 : x
2. Step 2: Convert to fraction form
   2,555.85/3,527.11 = 1,436.78/x
3. Step 3: Cross multiply
   2,555.85x = 3,527.11 × 1,436.78
4. Step 4: Simplify right side
   2,555.85x = 5,067,691.72
5. Step 5: Solve for x
   x = 5,067,691.72/2,555.85
6. Step 6: Final answer
   x = 1,982.78