Finding the Fourth Proportional to 2,144.08, 2,958.76 and 1,212.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.08 : 2,958.76 = 1,212.58 : x
2. Step 2: Convert to fraction form
   2,144.08/2,958.76 = 1,212.58/x
3. Step 3: Cross multiply
   2,144.08x = 2,958.76 × 1,212.58
4. Step 4: Simplify right side
   2,144.08x = 3,587,733.20
5. Step 5: Solve for x
   x = 3,587,733.20/2,144.08
6. Step 6: Final answer
   x = 1,673.32