Finding the Fourth Proportional to 1,399.02, 2,098.73 and 668.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399.02 : 2,098.73 = 668.00 : x
2. Step 2: Convert to fraction form
   1,399.02/2,098.73 = 668.00/x
3. Step 3: Cross multiply
   1,399.02x = 2,098.73 × 668.00
4. Step 4: Simplify right side
   1,399.02x = 1,401,942.82
5. Step 5: Solve for x
   x = 1,401,942.82/1,399.02
6. Step 6: Final answer
   x = 1,002.09