Finding the Fourth Proportional to 1,105.23, 1,525.71 and 712.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.23 : 1,525.71 = 712.44 : x
2. Step 2: Convert to fraction form
   1,105.23/1,525.71 = 712.44/x
3. Step 3: Cross multiply
   1,105.23x = 1,525.71 × 712.44
4. Step 4: Simplify right side
   1,105.23x = 1,086,976.83
5. Step 5: Solve for x
   x = 1,086,976.83/1,105.23
6. Step 6: Final answer
   x = 983.48