Finding the Fourth Proportional to 1,033.72, 1,426.33 and 660.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,033.72 : 1,426.33 = 660.41 : x
2. Step 2: Convert to fraction form
   1,033.72/1,426.33 = 660.41/x
3. Step 3: Cross multiply
   1,033.72x = 1,426.33 × 660.41
4. Step 4: Simplify right side
   1,033.72x = 941,967.81
5. Step 5: Solve for x
   x = 941,967.81/1,033.72
6. Step 6: Final answer
   x = 911.24