Finding the Fourth Proportional to 2,491.74, 3,438.84 and 1,443.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491.74 : 3,438.84 = 1,443.78 : x
2. Step 2: Convert to fraction form
   2,491.74/3,438.84 = 1,443.78/x
3. Step 3: Cross multiply
   2,491.74x = 3,438.84 × 1,443.78
4. Step 4: Simplify right side
   2,491.74x = 4,964,928.42
5. Step 5: Solve for x
   x = 4,964,928.42/2,491.74
6. Step 6: Final answer
   x = 1,992.55