Finding the Fourth Proportional to 2,685.98, 3,706.64 and 1,507.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,685.98 : 3,706.64 = 1,507.05 : x
2. Step 2: Convert to fraction form
   2,685.98/3,706.64 = 1,507.05/x
3. Step 3: Cross multiply
   2,685.98x = 3,706.64 × 1,507.05
4. Step 4: Simplify right side
   2,685.98x = 5,586,091.81
5. Step 5: Solve for x
   x = 5,586,091.81/2,685.98
6. Step 6: Final answer
   x = 2,079.72