Finding the Fourth Proportional to 2,042.20, 3,066.90 and 1,581.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.20 : 3,066.90 = 1,581.10 : x
2. Step 2: Convert to fraction form
   2,042.20/3,066.90 = 1,581.10/x
3. Step 3: Cross multiply
   2,042.20x = 3,066.90 × 1,581.10
4. Step 4: Simplify right side
   2,042.20x = 4,849,075.59
5. Step 5: Solve for x
   x = 4,849,075.59/2,042.20
6. Step 6: Final answer
   x = 2,374.44