Finding the Fourth Proportional to 1,103.37, 1,522.79 and 661.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.37 : 1,522.79 = 661.52 : x
2. Step 2: Convert to fraction form
   1,103.37/1,522.79 = 661.52/x
3. Step 3: Cross multiply
   1,103.37x = 1,522.79 × 661.52
4. Step 4: Simplify right side
   1,103.37x = 1,007,348.93
5. Step 5: Solve for x
   x = 1,007,348.93/1,103.37
6. Step 6: Final answer
   x = 912.97