Finding the Fourth Proportional to 2,557.27, 3,527.15 and 1,561.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557.27 : 3,527.15 = 1,561.73 : x
2. Step 2: Convert to fraction form
   2,557.27/3,527.15 = 1,561.73/x
3. Step 3: Cross multiply
   2,557.27x = 3,527.15 × 1,561.73
4. Step 4: Simplify right side
   2,557.27x = 5,508,450.37
5. Step 5: Solve for x
   x = 5,508,450.37/2,557.27
6. Step 6: Final answer
   x = 2,154.03