Finding the Fourth Proportional to 1,659.48, 2,290.42 and 960.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.48 : 2,290.42 = 960.76 : x
2. Step 2: Convert to fraction form
   1,659.48/2,290.42 = 960.76/x
3. Step 3: Cross multiply
   1,659.48x = 2,290.42 × 960.76
4. Step 4: Simplify right side
   1,659.48x = 2,200,543.92
5. Step 5: Solve for x
   x = 2,200,543.92/1,659.48
6. Step 6: Final answer
   x = 1,326.04