Finding the Fourth Proportional to 1,659.30, 2,289.30 and 960.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.30 : 2,289.30 = 960.72 : x
2. Step 2: Convert to fraction form
   1,659.30/2,289.30 = 960.72/x
3. Step 3: Cross multiply
   1,659.30x = 2,289.30 × 960.72
4. Step 4: Simplify right side
   1,659.30x = 2,199,376.30
5. Step 5: Solve for x
   x = 2,199,376.30/1,659.30
6. Step 6: Final answer
   x = 1,325.48