Finding the Fourth Proportional to 2,500.22, 3,450.70 and 2,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.22 : 3,450.70 = 2,389.50 : x
2. Step 2: Convert to fraction form
   2,500.22/3,450.70 = 2,389.50/x
3. Step 3: Cross multiply
   2,500.22x = 3,450.70 × 2,389.50
4. Step 4: Simplify right side
   2,500.22x = 8,245,447.65
5. Step 5: Solve for x
   x = 8,245,447.65/2,500.22
6. Step 6: Final answer
   x = 3,297.89