Finding the Fourth Proportional to 1,868.04, 2,578.28 and 1,081.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.04 : 2,578.28 = 1,081.98 : x
2. Step 2: Convert to fraction form
   1,868.04/2,578.28 = 1,081.98/x
3. Step 3: Cross multiply
   1,868.04x = 2,578.28 × 1,081.98
4. Step 4: Simplify right side
   1,868.04x = 2,789,641.98
5. Step 5: Solve for x
   x = 2,789,641.98/1,868.04
6. Step 6: Final answer
   x = 1,493.35