Finding the Fourth Proportional to 1,017.27, 1,524.86 and 400.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.27 : 1,524.86 = 400.73 : x
2. Step 2: Convert to fraction form
   1,017.27/1,524.86 = 400.73/x
3. Step 3: Cross multiply
   1,017.27x = 1,524.86 × 400.73
4. Step 4: Simplify right side
   1,017.27x = 611,047.52
5. Step 5: Solve for x
   x = 611,047.52/1,017.27
6. Step 6: Final answer
   x = 600.67