Finding the Fourth Proportional to 2,188.16, 3,283.49 and 801.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.16 : 3,283.49 = 801.31 : x
2. Step 2: Convert to fraction form
   2,188.16/3,283.49 = 801.31/x
3. Step 3: Cross multiply
   2,188.16x = 3,283.49 × 801.31
4. Step 4: Simplify right side
   2,188.16x = 2,631,093.37
5. Step 5: Solve for x
   x = 2,631,093.37/2,188.16
6. Step 6: Final answer
   x = 1,202.42