Finding the Fourth Proportional to 1,352.81, 1,866.89 and 731.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,352.81 : 1,866.89 = 731.81 : x
2. Step 2: Convert to fraction form
   1,352.81/1,866.89 = 731.81/x
3. Step 3: Cross multiply
   1,352.81x = 1,866.89 × 731.81
4. Step 4: Simplify right side
   1,352.81x = 1,366,215.27
5. Step 5: Solve for x
   x = 1,366,215.27/1,352.81
6. Step 6: Final answer
   x = 1,009.91