Finding the Fourth Proportional to 2,687.72, 3,708.80 and 1,508.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,687.72 : 3,708.80 = 1,508.56 : x
2. Step 2: Convert to fraction form
   2,687.72/3,708.80 = 1,508.56/x
3. Step 3: Cross multiply
   2,687.72x = 3,708.80 × 1,508.56
4. Step 4: Simplify right side
   2,687.72x = 5,594,947.33
5. Step 5: Solve for x
   x = 5,594,947.33/2,687.72
6. Step 6: Final answer
   x = 2,081.67