Finding the Fourth Proportional to 2,282.88, 3,422.16 and 1,242.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,282.88 : 3,422.16 = 1,242.72 : x
2. Step 2: Convert to fraction form
   2,282.88/3,422.16 = 1,242.72/x
3. Step 3: Cross multiply
   2,282.88x = 3,422.16 × 1,242.72
4. Step 4: Simplify right side
   2,282.88x = 4,252,786.68
5. Step 5: Solve for x
   x = 4,252,786.68/2,282.88
6. Step 6: Final answer
   x = 1,862.90