Finding the Fourth Proportional to 2,189.20, 3,022.82 and 1,350.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.20 : 3,022.82 = 1,350.32 : x
2. Step 2: Convert to fraction form
   2,189.20/3,022.82 = 1,350.32/x
3. Step 3: Cross multiply
   2,189.20x = 3,022.82 × 1,350.32
4. Step 4: Simplify right side
   2,189.20x = 4,081,774.30
5. Step 5: Solve for x
   x = 4,081,774.30/2,189.20
6. Step 6: Final answer
   x = 1,864.50