Finding the Fourth Proportional to 2,517.72, 3,777.18 and 957.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,517.72 : 3,777.18 = 957.72 : x
2. Step 2: Convert to fraction form
   2,517.72/3,777.18 = 957.72/x
3. Step 3: Cross multiply
   2,517.72x = 3,777.18 × 957.72
4. Step 4: Simplify right side
   2,517.72x = 3,617,480.83
5. Step 5: Solve for x
   x = 3,617,480.83/2,517.72
6. Step 6: Final answer
   x = 1,436.81