Finding the Fourth Proportional to 2,314.32, 3,215.90 and 2,290.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,314.32 : 3,215.90 = 2,290.64 : x
2. Step 2: Convert to fraction form
   2,314.32/3,215.90 = 2,290.64/x
3. Step 3: Cross multiply
   2,314.32x = 3,215.90 × 2,290.64
4. Step 4: Simplify right side
   2,314.32x = 7,366,469.18
5. Step 5: Solve for x
   x = 7,366,469.18/2,314.32
6. Step 6: Final answer
   x = 3,183.00