Finding the Fourth Proportional to 1,105.15, 1,524.60 and 662.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.15 : 1,524.60 = 662.29 : x
2. Step 2: Convert to fraction form
   1,105.15/1,524.60 = 662.29/x
3. Step 3: Cross multiply
   1,105.15x = 1,524.60 × 662.29
4. Step 4: Simplify right side
   1,105.15x = 1,009,720.66
5. Step 5: Solve for x
   x = 1,009,720.66/1,105.15
6. Step 6: Final answer
   x = 913.65