Finding the Fourth Proportional to 3,974.31, 5,484.33 and 2,205.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,974.31 : 5,484.33 = 2,205.90 : x
2. Step 2: Convert to fraction form
   3,974.31/5,484.33 = 2,205.90/x
3. Step 3: Cross multiply
   3,974.31x = 5,484.33 × 2,205.90
4. Step 4: Simplify right side
   3,974.31x = 12,097,883.55
5. Step 5: Solve for x
   x = 12,097,883.55/3,974.31
6. Step 6: Final answer
   x = 3,044.02