Finding the Fourth Proportional to 2,945.50, 4,065.17 and 1,686.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.50 : 4,065.17 = 1,686.76 : x
2. Step 2: Convert to fraction form
   2,945.50/4,065.17 = 1,686.76/x
3. Step 3: Cross multiply
   2,945.50x = 4,065.17 × 1,686.76
4. Step 4: Simplify right side
   2,945.50x = 6,856,947.55
5. Step 5: Solve for x
   x = 6,856,947.55/2,945.50
6. Step 6: Final answer
   x = 2,327.94