Finding the Fourth Proportional to 2,621.76, 3,932.56 and 772.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.76 : 3,932.56 = 772.93 : x
2. Step 2: Convert to fraction form
   2,621.76/3,932.56 = 772.93/x
3. Step 3: Cross multiply
   2,621.76x = 3,932.56 × 772.93
4. Step 4: Simplify right side
   2,621.76x = 3,039,593.60
5. Step 5: Solve for x
   x = 3,039,593.60/2,621.76
6. Step 6: Final answer
   x = 1,159.37