Finding the Fourth Proportional to 1,328.54, 1,993.25 and 598.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,328.54 : 1,993.25 = 598.61 : x
2. Step 2: Convert to fraction form
   1,328.54/1,993.25 = 598.61/x
3. Step 3: Cross multiply
   1,328.54x = 1,993.25 × 598.61
4. Step 4: Simplify right side
   1,328.54x = 1,193,185.86
5. Step 5: Solve for x
   x = 1,193,185.86/1,328.54
6. Step 6: Final answer
   x = 898.12