Finding the Fourth Proportional to 2,194.48, 3,286.86 and 2,150.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,194.48 : 3,286.86 = 2,150.20 : x
2. Step 2: Convert to fraction form
   2,194.48/3,286.86 = 2,150.20/x
3. Step 3: Cross multiply
   2,194.48x = 3,286.86 × 2,150.20
4. Step 4: Simplify right side
   2,194.48x = 7,067,406.37
5. Step 5: Solve for x
   x = 7,067,406.37/2,194.48
6. Step 6: Final answer
   x = 3,220.54