Finding the Fourth Proportional to 2,527.72, 3,791.62 and 772.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,527.72 : 3,791.62 = 772.76 : x
2. Step 2: Convert to fraction form
   2,527.72/3,791.62 = 772.76/x
3. Step 3: Cross multiply
   2,527.72x = 3,791.62 × 772.76
4. Step 4: Simplify right side
   2,527.72x = 2,930,012.27
5. Step 5: Solve for x
   x = 2,930,012.27/2,527.72
6. Step 6: Final answer
   x = 1,159.15