Finding the Fourth Proportional to 2,205.77, 3,043.78 and 1,211.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.77 : 3,043.78 = 1,211.02 : x
2. Step 2: Convert to fraction form
   2,205.77/3,043.78 = 1,211.02/x
3. Step 3: Cross multiply
   2,205.77x = 3,043.78 × 1,211.02
4. Step 4: Simplify right side
   2,205.77x = 3,686,067.82
5. Step 5: Solve for x
   x = 3,686,067.82/2,205.77
6. Step 6: Final answer
   x = 1,671.11