Finding the Fourth Proportional to 1,105.36, 1,524.76 and 712.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.36 : 1,524.76 = 712.39 : x
2. Step 2: Convert to fraction form
   1,105.36/1,524.76 = 712.39/x
3. Step 3: Cross multiply
   1,105.36x = 1,524.76 × 712.39
4. Step 4: Simplify right side
   1,105.36x = 1,086,216.75
5. Step 5: Solve for x
   x = 1,086,216.75/1,105.36
6. Step 6: Final answer
   x = 982.68