Finding the Fourth Proportional to 1,017.72, 1,404.47 and 598.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.72 : 1,404.47 = 598.08 : x
2. Step 2: Convert to fraction form
   1,017.72/1,404.47 = 598.08/x
3. Step 3: Cross multiply
   1,017.72x = 1,404.47 × 598.08
4. Step 4: Simplify right side
   1,017.72x = 839,984.67
5. Step 5: Solve for x
   x = 839,984.67/1,017.72
6. Step 6: Final answer
   x = 825.36