Finding the Fourth Proportional to 2,721.30, 4,082.52 and 1,422.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721.30 : 4,082.52 = 1,422.42 : x
2. Step 2: Convert to fraction form
   2,721.30/4,082.52 = 1,422.42/x
3. Step 3: Cross multiply
   2,721.30x = 4,082.52 × 1,422.42
4. Step 4: Simplify right side
   2,721.30x = 5,807,058.10
5. Step 5: Solve for x
   x = 5,807,058.10/2,721.30
6. Step 6: Final answer
   x = 2,133.93