Finding the Fourth Proportional to 2,144.16, 3,211.98 and 1,679.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.16 : 3,211.98 = 1,679.76 : x
2. Step 2: Convert to fraction form
   2,144.16/3,211.98 = 1,679.76/x
3. Step 3: Cross multiply
   2,144.16x = 3,211.98 × 1,679.76
4. Step 4: Simplify right side
   2,144.16x = 5,395,355.52
5. Step 5: Solve for x
   x = 5,395,355.52/2,144.16
6. Step 6: Final answer
   x = 2,516.30