Finding the Fourth Proportional to 1,103.01, 1,522.16 and 661.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.01 : 1,522.16 = 661.29 : x
2. Step 2: Convert to fraction form
   1,103.01/1,522.16 = 661.29/x
3. Step 3: Cross multiply
   1,103.01x = 1,522.16 × 661.29
4. Step 4: Simplify right side
   1,103.01x = 1,006,589.19
5. Step 5: Solve for x
   x = 1,006,589.19/1,103.01
6. Step 6: Final answer
   x = 912.58