Finding the Fourth Proportional to 2,189.59, 3,021.57 and 1,194.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.59 : 3,021.57 = 1,194.89 : x
2. Step 2: Convert to fraction form
   2,189.59/3,021.57 = 1,194.89/x
3. Step 3: Cross multiply
   2,189.59x = 3,021.57 × 1,194.89
4. Step 4: Simplify right side
   2,189.59x = 3,610,428.67
5. Step 5: Solve for x
   x = 3,610,428.67/2,189.59
6. Step 6: Final answer
   x = 1,648.91