Finding the Fourth Proportional to 2,686.50, 3,707.39 and 1,507.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.50 : 3,707.39 = 1,507.57 : x
2. Step 2: Convert to fraction form
   2,686.50/3,707.39 = 1,507.57/x
3. Step 3: Cross multiply
   2,686.50x = 3,707.39 × 1,507.57
4. Step 4: Simplify right side
   2,686.50x = 5,589,149.94
5. Step 5: Solve for x
   x = 5,589,149.94/2,686.50
6. Step 6: Final answer
   x = 2,080.46