Finding the Fourth Proportional to 3,490.58, 4,815.56 and 2,231.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,490.58 : 4,815.56 = 2,231.30 : x
2. Step 2: Convert to fraction form
   3,490.58/4,815.56 = 2,231.30/x
3. Step 3: Cross multiply
   3,490.58x = 4,815.56 × 2,231.30
4. Step 4: Simplify right side
   3,490.58x = 10,744,959.03
5. Step 5: Solve for x
   x = 10,744,959.03/3,490.58
6. Step 6: Final answer
   x = 3,078.27