Finding the Fourth Proportional to 2,216.35, 3,058.53 and 1,208.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.35 : 3,058.53 = 1,208.07 : x
2. Step 2: Convert to fraction form
   2,216.35/3,058.53 = 1,208.07/x
3. Step 3: Cross multiply
   2,216.35x = 3,058.53 × 1,208.07
4. Step 4: Simplify right side
   2,216.35x = 3,694,917.55
5. Step 5: Solve for x
   x = 3,694,917.55/2,216.35
6. Step 6: Final answer
   x = 1,667.11