Finding the Fourth Proportional to 1,868.45, 2,578.17 and 1,082.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.45 : 2,578.17 = 1,082.34 : x
2. Step 2: Convert to fraction form
   1,868.45/2,578.17 = 1,082.34/x
3. Step 3: Cross multiply
   1,868.45x = 2,578.17 × 1,082.34
4. Step 4: Simplify right side
   1,868.45x = 2,790,456.52
5. Step 5: Solve for x
   x = 2,790,456.52/1,868.45
6. Step 6: Final answer
   x = 1,493.46