Finding the Fourth Proportional to 2,399.07, 3,598.50 and 667.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.07 : 3,598.50 = 667.71 : x
2. Step 2: Convert to fraction form
   2,399.07/3,598.50 = 667.71/x
3. Step 3: Cross multiply
   2,399.07x = 3,598.50 × 667.71
4. Step 4: Simplify right side
   2,399.07x = 2,402,754.44
5. Step 5: Solve for x
   x = 2,402,754.44/2,399.07
6. Step 6: Final answer
   x = 1,001.54