Finding the Fourth Proportional to 1,233.43, 1,700.22 and 918.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,233.43 : 1,700.22 = 918.20 : x
2. Step 2: Convert to fraction form
   1,233.43/1,700.22 = 918.20/x
3. Step 3: Cross multiply
   1,233.43x = 1,700.22 × 918.20
4. Step 4: Simplify right side
   1,233.43x = 1,561,140.59
5. Step 5: Solve for x
   x = 1,561,140.59/1,233.43
6. Step 6: Final answer
   x = 1,265.69