Finding the Fourth Proportional to 1,104.05, 1,522.96 and 661.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,104.05 : 1,522.96 = 661.18 : x
2. Step 2: Convert to fraction form
   1,104.05/1,522.96 = 661.18/x
3. Step 3: Cross multiply
   1,104.05x = 1,522.96 × 661.18
4. Step 4: Simplify right side
   1,104.05x = 1,006,950.69
5. Step 5: Solve for x
   x = 1,006,950.69/1,104.05
6. Step 6: Final answer
   x = 912.05