Finding the Fourth Proportional to 1,105.58, 1,525.02 and 712.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.58 : 1,525.02 = 712.10 : x
2. Step 2: Convert to fraction form
   1,105.58/1,525.02 = 712.10/x
3. Step 3: Cross multiply
   1,105.58x = 1,525.02 × 712.10
4. Step 4: Simplify right side
   1,105.58x = 1,085,966.74
5. Step 5: Solve for x
   x = 1,085,966.74/1,105.58
6. Step 6: Final answer
   x = 982.26