Finding the Fourth Proportional to 2,689.64, 4,032.03 and 957.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689.64 : 4,032.03 = 957.86 : x
2. Step 2: Convert to fraction form
   2,689.64/4,032.03 = 957.86/x
3. Step 3: Cross multiply
   2,689.64x = 4,032.03 × 957.86
4. Step 4: Simplify right side
   2,689.64x = 3,862,100.10
5. Step 5: Solve for x
   x = 3,862,100.10/2,689.64
6. Step 6: Final answer
   x = 1,435.92