Finding the Fourth Proportional to 1,040.99, 1,436.49 and 598.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.99 : 1,436.49 = 598.91 : x
2. Step 2: Convert to fraction form
   1,040.99/1,436.49 = 598.91/x
3. Step 3: Cross multiply
   1,040.99x = 1,436.49 × 598.91
4. Step 4: Simplify right side
   1,040.99x = 860,321.04
5. Step 5: Solve for x
   x = 860,321.04/1,040.99
6. Step 6: Final answer
   x = 826.45