Finding the Fourth Proportional to 2,108.00, 2,908.19 and 1,223.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.00 : 2,908.19 = 1,223.27 : x
2. Step 2: Convert to fraction form
   2,108.00/2,908.19 = 1,223.27/x
3. Step 3: Cross multiply
   2,108.00x = 2,908.19 × 1,223.27
4. Step 4: Simplify right side
   2,108.00x = 3,557,480.92
5. Step 5: Solve for x
   x = 3,557,480.92/2,108.00
6. Step 6: Final answer
   x = 1,687.61