Finding the Fourth Proportional to 1,040.78, 1,436.28 and 598.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.78 : 1,436.28 = 598.52 : x
2. Step 2: Convert to fraction form
   1,040.78/1,436.28 = 598.52/x
3. Step 3: Cross multiply
   1,040.78x = 1,436.28 × 598.52
4. Step 4: Simplify right side
   1,040.78x = 859,642.31
5. Step 5: Solve for x
   x = 859,642.31/1,040.78
6. Step 6: Final answer
   x = 825.96