Finding the Fourth Proportional to 1,105.34, 1,525.36 and 663.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.34 : 1,525.36 = 663.23 : x
2. Step 2: Convert to fraction form
   1,105.34/1,525.36 = 663.23/x
3. Step 3: Cross multiply
   1,105.34x = 1,525.36 × 663.23
4. Step 4: Simplify right side
   1,105.34x = 1,011,661.20
5. Step 5: Solve for x
   x = 1,011,661.20/1,105.34
6. Step 6: Final answer
   x = 915.25