Finding the Fourth Proportional to 2,021.37, 3,031.69 and 540.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.37 : 3,031.69 = 540.60 : x
2. Step 2: Convert to fraction form
   2,021.37/3,031.69 = 540.60/x
3. Step 3: Cross multiply
   2,021.37x = 3,031.69 × 540.60
4. Step 4: Simplify right side
   2,021.37x = 1,638,931.61
5. Step 5: Solve for x
   x = 1,638,931.61/2,021.37
6. Step 6: Final answer
   x = 810.80