Finding the Fourth Proportional to 2,443.77, 3,372.64 and 1,605.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.77 : 3,372.64 = 1,605.15 : x
2. Step 2: Convert to fraction form
   2,443.77/3,372.64 = 1,605.15/x
3. Step 3: Cross multiply
   2,443.77x = 3,372.64 × 1,605.15
4. Step 4: Simplify right side
   2,443.77x = 5,413,589.08
5. Step 5: Solve for x
   x = 5,413,589.08/2,443.77
6. Step 6: Final answer
   x = 2,215.26