Finding the Fourth Proportional to 2,021.20, 3,031.83 and 560.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.20 : 3,031.83 = 560.37 : x
2. Step 2: Convert to fraction form
   2,021.20/3,031.83 = 560.37/x
3. Step 3: Cross multiply
   2,021.20x = 3,031.83 × 560.37
4. Step 4: Simplify right side
   2,021.20x = 1,698,940.89
5. Step 5: Solve for x
   x = 1,698,940.89/2,021.20
6. Step 6: Final answer
   x = 840.56