Finding the Fourth Proportional to 2,786.97, 4,181.55 and 1,056.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,786.97 : 4,181.55 = 1,056.81 : x
2. Step 2: Convert to fraction form
   2,786.97/4,181.55 = 1,056.81/x
3. Step 3: Cross multiply
   2,786.97x = 4,181.55 × 1,056.81
4. Step 4: Simplify right side
   2,786.97x = 4,419,103.86
5. Step 5: Solve for x
   x = 4,419,103.86/2,786.97
6. Step 6: Final answer
   x = 1,585.63