Finding the Fourth Proportional to 2,990.14, 4,481.89 and 2,257.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,990.14 : 4,481.89 = 2,257.34 : x
2. Step 2: Convert to fraction form
   2,990.14/4,481.89 = 2,257.34/x
3. Step 3: Cross multiply
   2,990.14x = 4,481.89 × 2,257.34
4. Step 4: Simplify right side
   2,990.14x = 10,117,149.57
5. Step 5: Solve for x
   x = 10,117,149.57/2,990.14
6. Step 6: Final answer
   x = 3,383.50