Finding the Fourth Proportional to 2,128.05, 3,176.92 and 1,799.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.05 : 3,176.92 = 1,799.91 : x
2. Step 2: Convert to fraction form
   2,128.05/3,176.92 = 1,799.91/x
3. Step 3: Cross multiply
   2,128.05x = 3,176.92 × 1,799.91
4. Step 4: Simplify right side
   2,128.05x = 5,718,165.58
5. Step 5: Solve for x
   x = 5,718,165.58/2,128.05
6. Step 6: Final answer
   x = 2,687.04