Finding the Fourth Proportional to 1,036.16, 1,429.72 and 657.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.16 : 1,429.72 = 657.96 : x
2. Step 2: Convert to fraction form
   1,036.16/1,429.72 = 657.96/x
3. Step 3: Cross multiply
   1,036.16x = 1,429.72 × 657.96
4. Step 4: Simplify right side
   1,036.16x = 940,698.57
5. Step 5: Solve for x
   x = 940,698.57/1,036.16
6. Step 6: Final answer
   x = 907.87