Finding the Fourth Proportional to 2,424.69, 3,347.69 and 1,638.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,424.69 : 3,347.69 = 1,638.45 : x
2. Step 2: Convert to fraction form
   2,424.69/3,347.69 = 1,638.45/x
3. Step 3: Cross multiply
   2,424.69x = 3,347.69 × 1,638.45
4. Step 4: Simplify right side
   2,424.69x = 5,485,022.68
5. Step 5: Solve for x
   x = 5,485,022.68/2,424.69
6. Step 6: Final answer
   x = 2,262.15