Finding the Fourth Proportional to 2,072.82, 3,111.27 and 1,728.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.82 : 3,111.27 = 1,728.36 : x
2. Step 2: Convert to fraction form
   2,072.82/3,111.27 = 1,728.36/x
3. Step 3: Cross multiply
   2,072.82x = 3,111.27 × 1,728.36
4. Step 4: Simplify right side
   2,072.82x = 5,377,394.62
5. Step 5: Solve for x
   x = 5,377,394.62/2,072.82
6. Step 6: Final answer
   x = 2,594.24