Finding the Fourth Proportional to 2,257.27, 3,380.41 and 1,561.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,257.27 : 3,380.41 = 1,561.98 : x
2. Step 2: Convert to fraction form
   2,257.27/3,380.41 = 1,561.98/x
3. Step 3: Cross multiply
   2,257.27x = 3,380.41 × 1,561.98
4. Step 4: Simplify right side
   2,257.27x = 5,280,132.81
5. Step 5: Solve for x
   x = 5,280,132.81/2,257.27
6. Step 6: Final answer
   x = 2,339.17