Finding the Fourth Proportional to 1,868.25, 2,578.20 and 1,082.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.25 : 2,578.20 = 1,082.43 : x
2. Step 2: Convert to fraction form
   1,868.25/2,578.20 = 1,082.43/x
3. Step 3: Cross multiply
   1,868.25x = 2,578.20 × 1,082.43
4. Step 4: Simplify right side
   1,868.25x = 2,790,721.03
5. Step 5: Solve for x
   x = 2,790,721.03/1,868.25
6. Step 6: Final answer
   x = 1,493.76