Finding the Fourth Proportional to 2,128.73, 3,189.97 and 1,073.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.73 : 3,189.97 = 1,073.10 : x
2. Step 2: Convert to fraction form
   2,128.73/3,189.97 = 1,073.10/x
3. Step 3: Cross multiply
   2,128.73x = 3,189.97 × 1,073.10
4. Step 4: Simplify right side
   2,128.73x = 3,423,138.17
5. Step 5: Solve for x
   x = 3,423,138.17/2,128.73
6. Step 6: Final answer
   x = 1,608.07