Finding the Fourth Proportional to 2,016.36, 2,781.90 and 1,308.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.36 : 2,781.90 = 1,308.74 : x
2. Step 2: Convert to fraction form
   2,016.36/2,781.90 = 1,308.74/x
3. Step 3: Cross multiply
   2,016.36x = 2,781.90 × 1,308.74
4. Step 4: Simplify right side
   2,016.36x = 3,640,769.90
5. Step 5: Solve for x
   x = 3,640,769.90/2,016.36
6. Step 6: Final answer
   x = 1,805.62