Finding the Fourth Proportional to 2,216.86, 3,059.20 and 1,208.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.86 : 3,059.20 = 1,208.54 : x
2. Step 2: Convert to fraction form
   2,216.86/3,059.20 = 1,208.54/x
3. Step 3: Cross multiply
   2,216.86x = 3,059.20 × 1,208.54
4. Step 4: Simplify right side
   2,216.86x = 3,697,165.57
5. Step 5: Solve for x
   x = 3,697,165.57/2,216.86
6. Step 6: Final answer
   x = 1,667.75