Finding the Fourth Proportional to 2,021.55, 2,793.20 and 1,805.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.55 : 2,793.20 = 1,805.55 : x
2. Step 2: Convert to fraction form
   2,021.55/2,793.20 = 1,805.55/x
3. Step 3: Cross multiply
   2,021.55x = 2,793.20 × 1,805.55
4. Step 4: Simplify right side
   2,021.55x = 5,043,253.23
5. Step 5: Solve for x
   x = 5,043,253.23/2,021.55
6. Step 6: Final answer
   x = 2,494.75