Finding the Fourth Proportional to 2,187.90, 3,282.27 and 801.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.90 : 3,282.27 = 801.10 : x
2. Step 2: Convert to fraction form
   2,187.90/3,282.27 = 801.10/x
3. Step 3: Cross multiply
   2,187.90x = 3,282.27 × 801.10
4. Step 4: Simplify right side
   2,187.90x = 2,629,426.50
5. Step 5: Solve for x
   x = 2,629,426.50/2,187.90
6. Step 6: Final answer
   x = 1,201.80