Finding the Fourth Proportional to 2,399.51, 3,599.33 and 668.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.51 : 3,599.33 = 668.13 : x
2. Step 2: Convert to fraction form
   2,399.51/3,599.33 = 668.13/x
3. Step 3: Cross multiply
   2,399.51x = 3,599.33 × 668.13
4. Step 4: Simplify right side
   2,399.51x = 2,404,817.01
5. Step 5: Solve for x
   x = 2,404,817.01/2,399.51
6. Step 6: Final answer
   x = 1,002.21