Finding the Fourth Proportional to 1,103.67, 1,522.23 and 661.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.67 : 1,522.23 = 661.01 : x
2. Step 2: Convert to fraction form
   1,103.67/1,522.23 = 661.01/x
3. Step 3: Cross multiply
   1,103.67x = 1,522.23 × 661.01
4. Step 4: Simplify right side
   1,103.67x = 1,006,201.64
5. Step 5: Solve for x
   x = 1,006,201.64/1,103.67
6. Step 6: Final answer
   x = 911.69