Finding the Fourth Proportional to 2,133.32, 2,943.90 and 1,189.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.32 : 2,943.90 = 1,189.07 : x
2. Step 2: Convert to fraction form
   2,133.32/2,943.90 = 1,189.07/x
3. Step 3: Cross multiply
   2,133.32x = 2,943.90 × 1,189.07
4. Step 4: Simplify right side
   2,133.32x = 3,500,488.45
5. Step 5: Solve for x
   x = 3,500,488.45/2,133.32
6. Step 6: Final answer
   x = 1,640.86