Finding the Fourth Proportional to 2,133.69, 2,944.52 and 1,189.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.69 : 2,944.52 = 1,189.55 : x
2. Step 2: Convert to fraction form
   2,133.69/2,944.52 = 1,189.55/x
3. Step 3: Cross multiply
   2,133.69x = 2,944.52 × 1,189.55
4. Step 4: Simplify right side
   2,133.69x = 3,502,633.10
5. Step 5: Solve for x
   x = 3,502,633.10/2,133.69
6. Step 6: Final answer
   x = 1,641.58