Finding the Fourth Proportional to 2,020.73, 3,031.14 and 559.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.73 : 3,031.14 = 559.89 : x
2. Step 2: Convert to fraction form
   2,020.73/3,031.14 = 559.89/x
3. Step 3: Cross multiply
   2,020.73x = 3,031.14 × 559.89
4. Step 4: Simplify right side
   2,020.73x = 1,697,109.61
5. Step 5: Solve for x
   x = 1,697,109.61/2,020.73
6. Step 6: Final answer
   x = 839.85