Finding the Fourth Proportional to 2,205.72, 3,043.98 and 1,211.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.72 : 3,043.98 = 1,211.04 : x
2. Step 2: Convert to fraction form
   2,205.72/3,043.98 = 1,211.04/x
3. Step 3: Cross multiply
   2,205.72x = 3,043.98 × 1,211.04
4. Step 4: Simplify right side
   2,205.72x = 3,686,381.54
5. Step 5: Solve for x
   x = 3,686,381.54/2,205.72
6. Step 6: Final answer
   x = 1,671.28