Finding the Fourth Proportional to 2,578.75, 3,868.89 and 1,483.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.75 : 3,868.89 = 1,483.90 : x
2. Step 2: Convert to fraction form
   2,578.75/3,868.89 = 1,483.90/x
3. Step 3: Cross multiply
   2,578.75x = 3,868.89 × 1,483.90
4. Step 4: Simplify right side
   2,578.75x = 5,741,045.87
5. Step 5: Solve for x
   x = 5,741,045.87/2,578.75
6. Step 6: Final answer
   x = 2,226.29