Finding the Fourth Proportional to 2,288.27, 3,155.54 and 1,392.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.27 : 3,155.54 = 1,392.14 : x
2. Step 2: Convert to fraction form
   2,288.27/3,155.54 = 1,392.14/x
3. Step 3: Cross multiply
   2,288.27x = 3,155.54 × 1,392.14
4. Step 4: Simplify right side
   2,288.27x = 4,392,930.72
5. Step 5: Solve for x
   x = 4,392,930.72/2,288.27
6. Step 6: Final answer
   x = 1,919.76