Finding the Fourth Proportional to 1,705.28, 2,353.31 and 959.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,705.28 : 2,353.31 = 959.23 : x
2. Step 2: Convert to fraction form
   1,705.28/2,353.31 = 959.23/x
3. Step 3: Cross multiply
   1,705.28x = 2,353.31 × 959.23
4. Step 4: Simplify right side
   1,705.28x = 2,257,365.55
5. Step 5: Solve for x
   x = 2,257,365.55/1,705.28
6. Step 6: Final answer
   x = 1,323.75