Finding the Fourth Proportional to 2,685.97, 3,706.86 and 1,507.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,685.97 : 3,706.86 = 1,507.15 : x
2. Step 2: Convert to fraction form
   2,685.97/3,706.86 = 1,507.15/x
3. Step 3: Cross multiply
   2,685.97x = 3,706.86 × 1,507.15
4. Step 4: Simplify right side
   2,685.97x = 5,586,794.05
5. Step 5: Solve for x
   x = 5,586,794.05/2,685.97
6. Step 6: Final answer
   x = 2,079.99