Finding the Fourth Proportional to 1,103.33, 1,523.03 and 661.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.33 : 1,523.03 = 661.07 : x
2. Step 2: Convert to fraction form
   1,103.33/1,523.03 = 661.07/x
3. Step 3: Cross multiply
   1,103.33x = 1,523.03 × 661.07
4. Step 4: Simplify right side
   1,103.33x = 1,006,818.52
5. Step 5: Solve for x
   x = 1,006,818.52/1,103.33
6. Step 6: Final answer
   x = 912.53