Finding the Fourth Proportional to 2,839.98, 3,919.23 and 1,581.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,839.98 : 3,919.23 = 1,581.06 : x
2. Step 2: Convert to fraction form
   2,839.98/3,919.23 = 1,581.06/x
3. Step 3: Cross multiply
   2,839.98x = 3,919.23 × 1,581.06
4. Step 4: Simplify right side
   2,839.98x = 6,196,537.78
5. Step 5: Solve for x
   x = 6,196,537.78/2,839.98
6. Step 6: Final answer
   x = 2,181.89