Finding the Fourth Proportional to 2,826.39, 3,900.18 and 1,647.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.39 : 3,900.18 = 1,647.57 : x
2. Step 2: Convert to fraction form
   2,826.39/3,900.18 = 1,647.57/x
3. Step 3: Cross multiply
   2,826.39x = 3,900.18 × 1,647.57
4. Step 4: Simplify right side
   2,826.39x = 6,425,819.56
5. Step 5: Solve for x
   x = 6,425,819.56/2,826.39
6. Step 6: Final answer
   x = 2,273.51