Finding the Fourth Proportional to 1,040.10, 1,435.38 and 598.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.10 : 1,435.38 = 598.10 : x
2. Step 2: Convert to fraction form
   1,040.10/1,435.38 = 598.10/x
3. Step 3: Cross multiply
   1,040.10x = 1,435.38 × 598.10
4. Step 4: Simplify right side
   1,040.10x = 858,500.78
5. Step 5: Solve for x
   x = 858,500.78/1,040.10
6. Step 6: Final answer
   x = 825.40