Finding the Fourth Proportional to 2,491.26, 3,437.56 and 1,443.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491.26 : 3,437.56 = 1,443.12 : x
2. Step 2: Convert to fraction form
   2,491.26/3,437.56 = 1,443.12/x
3. Step 3: Cross multiply
   2,491.26x = 3,437.56 × 1,443.12
4. Step 4: Simplify right side
   2,491.26x = 4,960,811.59
5. Step 5: Solve for x
   x = 4,960,811.59/2,491.26
6. Step 6: Final answer
   x = 1,991.29