Finding the Fourth Proportional to 2,443.58, 3,668.21 and 1,275.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.58 : 3,668.21 = 1,275.81 : x
2. Step 2: Convert to fraction form
   2,443.58/3,668.21 = 1,275.81/x
3. Step 3: Cross multiply
   2,443.58x = 3,668.21 × 1,275.81
4. Step 4: Simplify right side
   2,443.58x = 4,679,932.62
5. Step 5: Solve for x
   x = 4,679,932.62/2,443.58
6. Step 6: Final answer
   x = 1,915.20