Finding the Fourth Proportional to 2,133.90, 2,944.73 and 1,189.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.90 : 2,944.73 = 1,189.69 : x
2. Step 2: Convert to fraction form
   2,133.90/2,944.73 = 1,189.69/x
3. Step 3: Cross multiply
   2,133.90x = 2,944.73 × 1,189.69
4. Step 4: Simplify right side
   2,133.90x = 3,503,311.45
5. Step 5: Solve for x
   x = 3,503,311.45/2,133.90
6. Step 6: Final answer
   x = 1,641.74