Finding the Fourth Proportional to 1,524.10, 2,103.28 and 825.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.10 : 2,103.28 = 825.48 : x
2. Step 2: Convert to fraction form
   1,524.10/2,103.28 = 825.48/x
3. Step 3: Cross multiply
   1,524.10x = 2,103.28 × 825.48
4. Step 4: Simplify right side
   1,524.10x = 1,736,215.57
5. Step 5: Solve for x
   x = 1,736,215.57/1,524.10
6. Step 6: Final answer
   x = 1,139.17