Finding the Fourth Proportional to 2,083.28, 2,874.88 and 1,151.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.28 : 2,874.88 = 1,151.76 : x
2. Step 2: Convert to fraction form
   2,083.28/2,874.88 = 1,151.76/x
3. Step 3: Cross multiply
   2,083.28x = 2,874.88 × 1,151.76
4. Step 4: Simplify right side
   2,083.28x = 3,311,171.79
5. Step 5: Solve for x
   x = 3,311,171.79/2,083.28
6. Step 6: Final answer
   x = 1,589.40