Finding the Fourth Proportional to 1,868.64, 2,578.52 and 1,082.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.64 : 2,578.52 = 1,082.52 : x
2. Step 2: Convert to fraction form
   1,868.64/2,578.52 = 1,082.52/x
3. Step 3: Cross multiply
   1,868.64x = 2,578.52 × 1,082.52
4. Step 4: Simplify right side
   1,868.64x = 2,791,299.47
5. Step 5: Solve for x
   x = 2,791,299.47/1,868.64
6. Step 6: Final answer
   x = 1,493.76