Finding the Fourth Proportional to 2,443.20, 3,668.28 and 1,515.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.20 : 3,668.28 = 1,515.78 : x
2. Step 2: Convert to fraction form
   2,443.20/3,668.28 = 1,515.78/x
3. Step 3: Cross multiply
   2,443.20x = 3,668.28 × 1,515.78
4. Step 4: Simplify right side
   2,443.20x = 5,560,305.46
5. Step 5: Solve for x
   x = 5,560,305.46/2,443.20
6. Step 6: Final answer
   x = 2,275.83