Finding the Fourth Proportional to 1,016.57, 1,524.56 and 323.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.57 : 1,524.56 = 323.12 : x
2. Step 2: Convert to fraction form
   1,016.57/1,524.56 = 323.12/x
3. Step 3: Cross multiply
   1,016.57x = 1,524.56 × 323.12
4. Step 4: Simplify right side
   1,016.57x = 492,618.02
5. Step 5: Solve for x
   x = 492,618.02/1,016.57
6. Step 6: Final answer
   x = 484.59