Finding the Fourth Proportional to 2,491.56, 3,438.28 and 1,443.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491.56 : 3,438.28 = 1,443.60 : x
2. Step 2: Convert to fraction form
   2,491.56/3,438.28 = 1,443.60/x
3. Step 3: Cross multiply
   2,491.56x = 3,438.28 × 1,443.60
4. Step 4: Simplify right side
   2,491.56x = 4,963,501.01
5. Step 5: Solve for x
   x = 4,963,501.01/2,491.56
6. Step 6: Final answer
   x = 1,992.13