Finding the Fourth Proportional to 2,578.92, 3,863.27 and 1,190.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.92 : 3,863.27 = 1,190.34 : x
2. Step 2: Convert to fraction form
   2,578.92/3,863.27 = 1,190.34/x
3. Step 3: Cross multiply
   2,578.92x = 3,863.27 × 1,190.34
4. Step 4: Simplify right side
   2,578.92x = 4,598,598.86
5. Step 5: Solve for x
   x = 4,598,598.86/2,578.92
6. Step 6: Final answer
   x = 1,783.15