Finding the Fourth Proportional to 2,617.38, 3,925.60 and 768.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.38 : 3,925.60 = 768.46 : x
2. Step 2: Convert to fraction form
   2,617.38/3,925.60 = 768.46/x
3. Step 3: Cross multiply
   2,617.38x = 3,925.60 × 768.46
4. Step 4: Simplify right side
   2,617.38x = 3,016,666.58
5. Step 5: Solve for x
   x = 3,016,666.58/2,617.38
6. Step 6: Final answer
   x = 1,152.55