Finding the Fourth Proportional to 2,578.23, 3,558.03 and 1,443.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.23 : 3,558.03 = 1,443.99 : x
2. Step 2: Convert to fraction form
   2,578.23/3,558.03 = 1,443.99/x
3. Step 3: Cross multiply
   2,578.23x = 3,558.03 × 1,443.99
4. Step 4: Simplify right side
   2,578.23x = 5,137,759.74
5. Step 5: Solve for x
   x = 5,137,759.74/2,578.23
6. Step 6: Final answer
   x = 1,992.75