Finding the Fourth Proportional to 2,017.82, 3,020.21 and 1,042.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.82 : 3,020.21 = 1,042.58 : x
2. Step 2: Convert to fraction form
   2,017.82/3,020.21 = 1,042.58/x
3. Step 3: Cross multiply
   2,017.82x = 3,020.21 × 1,042.58
4. Step 4: Simplify right side
   2,017.82x = 3,148,798.05
5. Step 5: Solve for x
   x = 3,148,798.05/2,017.82
6. Step 6: Final answer
   x = 1,560.50