Finding the Fourth Proportional to 2,687.56, 3,708.78 and 1,508.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,687.56 : 3,708.78 = 1,508.68 : x
2. Step 2: Convert to fraction form
   2,687.56/3,708.78 = 1,508.68/x
3. Step 3: Cross multiply
   2,687.56x = 3,708.78 × 1,508.68
4. Step 4: Simplify right side
   2,687.56x = 5,595,362.21
5. Step 5: Solve for x
   x = 5,595,362.21/2,687.56
6. Step 6: Final answer
   x = 2,081.95