Finding the Fourth Proportional to 2,578.86, 3,557.52 and 1,633.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.86 : 3,557.52 = 1,633.05 : x
2. Step 2: Convert to fraction form
   2,578.86/3,557.52 = 1,633.05/x
3. Step 3: Cross multiply
   2,578.86x = 3,557.52 × 1,633.05
4. Step 4: Simplify right side
   2,578.86x = 5,809,608.04
5. Step 5: Solve for x
   x = 5,809,608.04/2,578.86
6. Step 6: Final answer
   x = 2,252.78