Finding the Fourth Proportional to 1,033.50, 1,426.89 and 718.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,033.50 : 1,426.89 = 718.65 : x
2. Step 2: Convert to fraction form
   1,033.50/1,426.89 = 718.65/x
3. Step 3: Cross multiply
   1,033.50x = 1,426.89 × 718.65
4. Step 4: Simplify right side
   1,033.50x = 1,025,434.50
5. Step 5: Solve for x
   x = 1,025,434.50/1,033.50
6. Step 6: Final answer
   x = 992.20