Finding the Fourth Proportional to 2,189.20, 3,021.15 and 1,194.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.20 : 3,021.15 = 1,194.50 : x
2. Step 2: Convert to fraction form
   2,189.20/3,021.15 = 1,194.50/x
3. Step 3: Cross multiply
   2,189.20x = 3,021.15 × 1,194.50
4. Step 4: Simplify right side
   2,189.20x = 3,608,759.55
5. Step 5: Solve for x
   x = 3,608,759.55/2,189.20
6. Step 6: Final answer
   x = 1,648.44