Finding the Fourth Proportional to 2,188.66, 3,284.24 and 801.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.66 : 3,284.24 = 801.81 : x
2. Step 2: Convert to fraction form
   2,188.66/3,284.24 = 801.81/x
3. Step 3: Cross multiply
   2,188.66x = 3,284.24 × 801.81
4. Step 4: Simplify right side
   2,188.66x = 2,633,336.47
5. Step 5: Solve for x
   x = 2,633,336.47/2,188.66
6. Step 6: Final answer
   x = 1,203.17