Finding the Fourth Proportional to 1,422.79, 1,963.82 and 1,275.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.79 : 1,963.82 = 1,275.17 : x
2. Step 2: Convert to fraction form
   1,422.79/1,963.82 = 1,275.17/x
3. Step 3: Cross multiply
   1,422.79x = 1,963.82 × 1,275.17
4. Step 4: Simplify right side
   1,422.79x = 2,504,197.72
5. Step 5: Solve for x
   x = 2,504,197.72/1,422.79
6. Step 6: Final answer
   x = 1,760.06