Finding the Fourth Proportional to 1,097.82, 1,517.94 and 959.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.82 : 1,517.94 = 959.40 : x
2. Step 2: Convert to fraction form
   1,097.82/1,517.94 = 959.40/x
3. Step 3: Cross multiply
   1,097.82x = 1,517.94 × 959.40
4. Step 4: Simplify right side
   1,097.82x = 1,456,311.64
5. Step 5: Solve for x
   x = 1,456,311.64/1,097.82
6. Step 6: Final answer
   x = 1,326.55