Finding the Fourth Proportional to 2,016.66, 2,778.21 and 1,929.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.66 : 2,778.21 = 1,929.18 : x
2. Step 2: Convert to fraction form
   2,016.66/2,778.21 = 1,929.18/x
3. Step 3: Cross multiply
   2,016.66x = 2,778.21 × 1,929.18
4. Step 4: Simplify right side
   2,016.66x = 5,359,667.17
5. Step 5: Solve for x
   x = 5,359,667.17/2,016.66
6. Step 6: Final answer
   x = 2,657.69