Finding the Fourth Proportional to 2,527.12, 3,791.84 and 1,139.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,527.12 : 3,791.84 = 1,139.72 : x
2. Step 2: Convert to fraction form
   2,527.12/3,791.84 = 1,139.72/x
3. Step 3: Cross multiply
   2,527.12x = 3,791.84 × 1,139.72
4. Step 4: Simplify right side
   2,527.12x = 4,321,635.88
5. Step 5: Solve for x
   x = 4,321,635.88/2,527.12
6. Step 6: Final answer
   x = 1,710.10