Finding the Fourth Proportional to 1,017.24, 1,403.67 and 597.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.24 : 1,403.67 = 597.72 : x
2. Step 2: Convert to fraction form
   1,017.24/1,403.67 = 597.72/x
3. Step 3: Cross multiply
   1,017.24x = 1,403.67 × 597.72
4. Step 4: Simplify right side
   1,017.24x = 839,001.63
5. Step 5: Solve for x
   x = 839,001.63/1,017.24
6. Step 6: Final answer
   x = 824.78