Finding the Fourth Proportional to 2,578.78, 3,558.83 and 1,459.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.78 : 3,558.83 = 1,459.57 : x
2. Step 2: Convert to fraction form
   2,578.78/3,558.83 = 1,459.57/x
3. Step 3: Cross multiply
   2,578.78x = 3,558.83 × 1,459.57
4. Step 4: Simplify right side
   2,578.78x = 5,194,347.90
5. Step 5: Solve for x
   x = 5,194,347.90/2,578.78
6. Step 6: Final answer
   x = 2,014.27