Finding the Fourth Proportional to 1,103.33, 1,522.41 and 661.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.33 : 1,522.41 = 661.13 : x
2. Step 2: Convert to fraction form
   1,103.33/1,522.41 = 661.13/x
3. Step 3: Cross multiply
   1,103.33x = 1,522.41 × 661.13
4. Step 4: Simplify right side
   1,103.33x = 1,006,503.31
5. Step 5: Solve for x
   x = 1,006,503.31/1,103.33
6. Step 6: Final answer
   x = 912.25