Finding the Fourth Proportional to 2,605.92, 3,596.07 and 1,557.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.92 : 3,596.07 = 1,557.78 : x
2. Step 2: Convert to fraction form
   2,605.92/3,596.07 = 1,557.78/x
3. Step 3: Cross multiply
   2,605.92x = 3,596.07 × 1,557.78
4. Step 4: Simplify right side
   2,605.92x = 5,601,885.92
5. Step 5: Solve for x
   x = 5,601,885.92/2,605.92
6. Step 6: Final answer
   x = 2,149.68