Finding the Fourth Proportional to 1,659.24, 2,286.72 and 1,328.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.24 : 2,286.72 = 1,328.76 : x
2. Step 2: Convert to fraction form
   1,659.24/2,286.72 = 1,328.76/x
3. Step 3: Cross multiply
   1,659.24x = 2,286.72 × 1,328.76
4. Step 4: Simplify right side
   1,659.24x = 3,038,502.07
5. Step 5: Solve for x
   x = 3,038,502.07/1,659.24
6. Step 6: Final answer
   x = 1,831.26