Finding the Fourth Proportional to 2,133.61, 2,944.15 and 1,189.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.61 : 2,944.15 = 1,189.33 : x
2. Step 2: Convert to fraction form
   2,133.61/2,944.15 = 1,189.33/x
3. Step 3: Cross multiply
   2,133.61x = 2,944.15 × 1,189.33
4. Step 4: Simplify right side
   2,133.61x = 3,501,576.22
5. Step 5: Solve for x
   x = 3,501,576.22/2,133.61
6. Step 6: Final answer
   x = 1,641.15