Finding the Fourth Proportional to 2,016.91, 2,781.84 and 1,928.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.91 : 2,781.84 = 1,928.59 : x
2. Step 2: Convert to fraction form
   2,016.91/2,781.84 = 1,928.59/x
3. Step 3: Cross multiply
   2,016.91x = 2,781.84 × 1,928.59
4. Step 4: Simplify right side
   2,016.91x = 5,365,028.81
5. Step 5: Solve for x
   x = 5,365,028.81/2,016.91
6. Step 6: Final answer
   x = 2,660.02