Finding the Fourth Proportional to 2,617.62, 3,925.88 and 768.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.62 : 3,925.88 = 768.24 : x
2. Step 2: Convert to fraction form
   2,617.62/3,925.88 = 768.24/x
3. Step 3: Cross multiply
   2,617.62x = 3,925.88 × 768.24
4. Step 4: Simplify right side
   2,617.62x = 3,016,018.05
5. Step 5: Solve for x
   x = 3,016,018.05/2,617.62
6. Step 6: Final answer
   x = 1,152.20