Finding the Fourth Proportional to 2,078.28, 2,868.06 and 1,146.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.28 : 2,868.06 = 1,146.72 : x
2. Step 2: Convert to fraction form
   2,078.28/2,868.06 = 1,146.72/x
3. Step 3: Cross multiply
   2,078.28x = 2,868.06 × 1,146.72
4. Step 4: Simplify right side
   2,078.28x = 3,288,861.76
5. Step 5: Solve for x
   x = 3,288,861.76/2,078.28
6. Step 6: Final answer
   x = 1,582.49