Finding the Fourth Proportional to 2,072.27, 3,108.83 and 1,098.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.27 : 3,108.83 = 1,098.11 : x
2. Step 2: Convert to fraction form
   2,072.27/3,108.83 = 1,098.11/x
3. Step 3: Cross multiply
   2,072.27x = 3,108.83 × 1,098.11
4. Step 4: Simplify right side
   2,072.27x = 3,413,816.28
5. Step 5: Solve for x
   x = 3,413,816.28/2,072.27
6. Step 6: Final answer
   x = 1,647.38