Finding the Fourth Proportional to 2,257.68, 3,110.18 and 1,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,257.68 : 3,110.18 = 1,856.72 : x
2. Step 2: Convert to fraction form
   2,257.68/3,110.18 = 1,856.72/x
3. Step 3: Cross multiply
   2,257.68x = 3,110.18 × 1,856.72
4. Step 4: Simplify right side
   2,257.68x = 5,774,733.41
5. Step 5: Solve for x
   x = 5,774,733.41/2,257.68
6. Step 6: Final answer
   x = 2,557.82