Finding the Fourth Proportional to 2,686.01, 3,706.80 and 1,507.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.01 : 3,706.80 = 1,507.15 : x
2. Step 2: Convert to fraction form
   2,686.01/3,706.80 = 1,507.15/x
3. Step 3: Cross multiply
   2,686.01x = 3,706.80 × 1,507.15
4. Step 4: Simplify right side
   2,686.01x = 5,586,702.60
5. Step 5: Solve for x
   x = 5,586,702.60/2,686.01
6. Step 6: Final answer
   x = 2,079.93