Finding the Fourth Proportional to 2,811.50, 4,216.79 and 1,251.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,811.50 : 4,216.79 = 1,251.14 : x
2. Step 2: Convert to fraction form
   2,811.50/4,216.79 = 1,251.14/x
3. Step 3: Cross multiply
   2,811.50x = 4,216.79 × 1,251.14
4. Step 4: Simplify right side
   2,811.50x = 5,275,767.30
5. Step 5: Solve for x
   x = 5,275,767.30/2,811.50
6. Step 6: Final answer
   x = 1,876.50