Finding the Fourth Proportional to 3,974.22, 5,484.42 and 2,205.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,974.22 : 5,484.42 = 2,205.72 : x
2. Step 2: Convert to fraction form
   3,974.22/5,484.42 = 2,205.72/x
3. Step 3: Cross multiply
   3,974.22x = 5,484.42 × 2,205.72
4. Step 4: Simplify right side
   3,974.22x = 12,097,094.88
5. Step 5: Solve for x
   x = 12,097,094.88/3,974.22
6. Step 6: Final answer
   x = 3,043.89