Finding the Fourth Proportional to 1,104.58, 1,524.30 and 712.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,104.58 : 1,524.30 = 712.30 : x
2. Step 2: Convert to fraction form
   1,104.58/1,524.30 = 712.30/x
3. Step 3: Cross multiply
   1,104.58x = 1,524.30 × 712.30
4. Step 4: Simplify right side
   1,104.58x = 1,085,758.89
5. Step 5: Solve for x
   x = 1,085,758.89/1,104.58
6. Step 6: Final answer
   x = 982.96