Finding the Fourth Proportional to 2,149.34, 3,224.52 and 668.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,149.34 : 3,224.52 = 668.49 : x
2. Step 2: Convert to fraction form
   2,149.34/3,224.52 = 668.49/x
3. Step 3: Cross multiply
   2,149.34x = 3,224.52 × 668.49
4. Step 4: Simplify right side
   2,149.34x = 2,155,559.37
5. Step 5: Solve for x
   x = 2,155,559.37/2,149.34
6. Step 6: Final answer
   x = 1,002.89