Finding the Fourth Proportional to 2,826.57, 3,900.78 and 1,707.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.57 : 3,900.78 = 1,707.42 : x
2. Step 2: Convert to fraction form
   2,826.57/3,900.78 = 1,707.42/x
3. Step 3: Cross multiply
   2,826.57x = 3,900.78 × 1,707.42
4. Step 4: Simplify right side
   2,826.57x = 6,660,269.79
5. Step 5: Solve for x
   x = 6,660,269.79/2,826.57
6. Step 6: Final answer
   x = 2,356.31