Finding the Fourth Proportional to 2,115.94, 2,917.78 and 1,486.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,115.94 : 2,917.78 = 1,486.27 : x
2. Step 2: Convert to fraction form
   2,115.94/2,917.78 = 1,486.27/x
3. Step 3: Cross multiply
   2,115.94x = 2,917.78 × 1,486.27
4. Step 4: Simplify right side
   2,115.94x = 4,336,608.88
5. Step 5: Solve for x
   x = 4,336,608.88/2,115.94
6. Step 6: Final answer
   x = 2,049.50