Finding the Fourth Proportional to 2,621.89, 3,932.25 and 773.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.89 : 3,932.25 = 773.13 : x
2. Step 2: Convert to fraction form
   2,621.89/3,932.25 = 773.13/x
3. Step 3: Cross multiply
   2,621.89x = 3,932.25 × 773.13
4. Step 4: Simplify right side
   2,621.89x = 3,040,140.44
5. Step 5: Solve for x
   x = 3,040,140.44/2,621.89
6. Step 6: Final answer
   x = 1,159.52