Finding the Fourth Proportional to 2,601.72, 3,900.24 and 957.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.72 : 3,900.24 = 957.12 : x
2. Step 2: Convert to fraction form
   2,601.72/3,900.24 = 957.12/x
3. Step 3: Cross multiply
   2,601.72x = 3,900.24 × 957.12
4. Step 4: Simplify right side
   2,601.72x = 3,732,997.71
5. Step 5: Solve for x
   x = 3,732,997.71/2,601.72
6. Step 6: Final answer
   x = 1,434.82