Finding the Fourth Proportional to 2,621.33, 3,932.67 and 772.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.33 : 3,932.67 = 772.51 : x
2. Step 2: Convert to fraction form
   2,621.33/3,932.67 = 772.51/x
3. Step 3: Cross multiply
   2,621.33x = 3,932.67 × 772.51
4. Step 4: Simplify right side
   2,621.33x = 3,038,026.90
5. Step 5: Solve for x
   x = 3,038,026.90/2,621.33
6. Step 6: Final answer
   x = 1,158.96