Finding the Fourth Proportional to 2,617.38, 3,925.61 and 768.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.38 : 3,925.61 = 768.45 : x
2. Step 2: Convert to fraction form
   2,617.38/3,925.61 = 768.45/x
3. Step 3: Cross multiply
   2,617.38x = 3,925.61 × 768.45
4. Step 4: Simplify right side
   2,617.38x = 3,016,635.00
5. Step 5: Solve for x
   x = 3,016,635.00/2,617.38
6. Step 6: Final answer
   x = 1,152.54