Finding the Fourth Proportional to 2,020.88, 3,031.31 and 560.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.88 : 3,031.31 = 560.03 : x
2. Step 2: Convert to fraction form
   2,020.88/3,031.31 = 560.03/x
3. Step 3: Cross multiply
   2,020.88x = 3,031.31 × 560.03
4. Step 4: Simplify right side
   2,020.88x = 1,697,612.47
5. Step 5: Solve for x
   x = 1,697,612.47/2,020.88
6. Step 6: Final answer
   x = 840.04