Finding the Fourth Proportional to 2,067.91, 2,852.76 and 1,228.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.91 : 2,852.76 = 1,228.14 : x
2. Step 2: Convert to fraction form
   2,067.91/2,852.76 = 1,228.14/x
3. Step 3: Cross multiply
   2,067.91x = 2,852.76 × 1,228.14
4. Step 4: Simplify right side
   2,067.91x = 3,503,593.27
5. Step 5: Solve for x
   x = 3,503,593.27/2,067.91
6. Step 6: Final answer
   x = 1,694.27