Finding the Fourth Proportional to 2,164.31, 3,243.71 and 1,189.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,164.31 : 3,243.71 = 1,189.27 : x
2. Step 2: Convert to fraction form
   2,164.31/3,243.71 = 1,189.27/x
3. Step 3: Cross multiply
   2,164.31x = 3,243.71 × 1,189.27
4. Step 4: Simplify right side
   2,164.31x = 3,857,646.99
5. Step 5: Solve for x
   x = 3,857,646.99/2,164.31
6. Step 6: Final answer
   x = 1,782.39