Finding the Fourth Proportional to 1,040.39, 1,435.69 and 597.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.39 : 1,435.69 = 597.98 : x
2. Step 2: Convert to fraction form
   1,040.39/1,435.69 = 597.98/x
3. Step 3: Cross multiply
   1,040.39x = 1,435.69 × 597.98
4. Step 4: Simplify right side
   1,040.39x = 858,513.91
5. Step 5: Solve for x
   x = 858,513.91/1,040.39
6. Step 6: Final answer
   x = 825.18