Finding the Fourth Proportional to 1,103.23, 1,522.50 and 661.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.23 : 1,522.50 = 661.04 : x
2. Step 2: Convert to fraction form
   1,103.23/1,522.50 = 661.04/x
3. Step 3: Cross multiply
   1,103.23x = 1,522.50 × 661.04
4. Step 4: Simplify right side
   1,103.23x = 1,006,437.58
5. Step 5: Solve for x
   x = 1,006,437.58/1,103.23
6. Step 6: Final answer
   x = 912.27