Finding the Fourth Proportional to 2,528.77, 3,791.71 and 773.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.77 : 3,791.71 = 773.29 : x
2. Step 2: Convert to fraction form
   2,528.77/3,791.71 = 773.29/x
3. Step 3: Cross multiply
   2,528.77x = 3,791.71 × 773.29
4. Step 4: Simplify right side
   2,528.77x = 2,932,068.60
5. Step 5: Solve for x
   x = 2,932,068.60/2,528.77
6. Step 6: Final answer
   x = 1,159.48