Finding the Fourth Proportional to 1,103.37, 1,522.89 and 661.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.37 : 1,522.89 = 661.53 : x
2. Step 2: Convert to fraction form
   1,103.37/1,522.89 = 661.53/x
3. Step 3: Cross multiply
   1,103.37x = 1,522.89 × 661.53
4. Step 4: Simplify right side
   1,103.37x = 1,007,437.42
5. Step 5: Solve for x
   x = 1,007,437.42/1,103.37
6. Step 6: Final answer
   x = 913.05