Finding the Fourth Proportional to 2,443.90, 3,430.10 and 2,443.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.90 : 3,430.10 = 2,443.90 : x
2. Step 2: Convert to fraction form
   2,443.90/3,430.10 = 2,443.90/x
3. Step 3: Cross multiply
   2,443.90x = 3,430.10 × 2,443.90
4. Step 4: Simplify right side
   2,443.90x = 8,382,821.39
5. Step 5: Solve for x
   x = 8,382,821.39/2,443.90
6. Step 6: Final answer
   x = 3,430.10