Finding the Fourth Proportional to 2,527.34, 3,791.42 and 861.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,527.34 : 3,791.42 = 861.61 : x
2. Step 2: Convert to fraction form
   2,527.34/3,791.42 = 861.61/x
3. Step 3: Cross multiply
   2,527.34x = 3,791.42 × 861.61
4. Step 4: Simplify right side
   2,527.34x = 3,266,711.60
5. Step 5: Solve for x
   x = 3,266,711.60/2,527.34
6. Step 6: Final answer
   x = 1,292.55