Finding the Fourth Proportional to 1,868.67, 2,578.71 and 1,082.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.67 : 2,578.71 = 1,082.70 : x
2. Step 2: Convert to fraction form
   1,868.67/2,578.71 = 1,082.70/x
3. Step 3: Cross multiply
   1,868.67x = 2,578.71 × 1,082.70
4. Step 4: Simplify right side
   1,868.67x = 2,791,969.32
5. Step 5: Solve for x
   x = 2,791,969.32/1,868.67
6. Step 6: Final answer
   x = 1,494.09