Finding the Fourth Proportional to 2,073.97, 2,861.49 and 1,189.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.97 : 2,861.49 = 1,189.72 : x
2. Step 2: Convert to fraction form
   2,073.97/2,861.49 = 1,189.72/x
3. Step 3: Cross multiply
   2,073.97x = 2,861.49 × 1,189.72
4. Step 4: Simplify right side
   2,073.97x = 3,404,371.88
5. Step 5: Solve for x
   x = 3,404,371.88/2,073.97
6. Step 6: Final answer
   x = 1,641.48