Finding the Fourth Proportional to 2,856.57, 4,286.22 and 1,394.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.57 : 4,286.22 = 1,394.91 : x
2. Step 2: Convert to fraction form
   2,856.57/4,286.22 = 1,394.91/x
3. Step 3: Cross multiply
   2,856.57x = 4,286.22 × 1,394.91
4. Step 4: Simplify right side
   2,856.57x = 5,978,891.14
5. Step 5: Solve for x
   x = 5,978,891.14/2,856.57
6. Step 6: Final answer
   x = 2,093.03