Finding the Fourth Proportional to 2,288.27, 3,157.78 and 1,293.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.27 : 3,157.78 = 1,293.76 : x
2. Step 2: Convert to fraction form
   2,288.27/3,157.78 = 1,293.76/x
3. Step 3: Cross multiply
   2,288.27x = 3,157.78 × 1,293.76
4. Step 4: Simplify right side
   2,288.27x = 4,085,409.45
5. Step 5: Solve for x
   x = 4,085,409.45/2,288.27
6. Step 6: Final answer
   x = 1,785.37