Finding the Fourth Proportional to 2,020.94, 3,031.59 and 540.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.94 : 3,031.59 = 540.39 : x
2. Step 2: Convert to fraction form
   2,020.94/3,031.59 = 540.39/x
3. Step 3: Cross multiply
   2,020.94x = 3,031.59 × 540.39
4. Step 4: Simplify right side
   2,020.94x = 1,638,234.22
5. Step 5: Solve for x
   x = 1,638,234.22/2,020.94
6. Step 6: Final answer
   x = 810.63