Finding the Fourth Proportional to 2,681.10, 3,697.71 and 2,016.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,681.10 : 3,697.71 = 2,016.78 : x
2. Step 2: Convert to fraction form
   2,681.10/3,697.71 = 2,016.78/x
3. Step 3: Cross multiply
   2,681.10x = 3,697.71 × 2,016.78
4. Step 4: Simplify right side
   2,681.10x = 7,457,467.57
5. Step 5: Solve for x
   x = 7,457,467.57/2,681.10
6. Step 6: Final answer
   x = 2,781.50