Finding the Fourth Proportional to 1,017.55, 1,404.05 and 597.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.55 : 1,404.05 = 597.81 : x
2. Step 2: Convert to fraction form
   1,017.55/1,404.05 = 597.81/x
3. Step 3: Cross multiply
   1,017.55x = 1,404.05 × 597.81
4. Step 4: Simplify right side
   1,017.55x = 839,355.13
5. Step 5: Solve for x
   x = 839,355.13/1,017.55
6. Step 6: Final answer
   x = 824.88