Finding the Fourth Proportional to 1,900.23, 2,851.17 and 668.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,900.23 : 2,851.17 = 668.52 : x
2. Step 2: Convert to fraction form
   1,900.23/2,851.17 = 668.52/x
3. Step 3: Cross multiply
   1,900.23x = 2,851.17 × 668.52
4. Step 4: Simplify right side
   1,900.23x = 1,906,061.66
5. Step 5: Solve for x
   x = 1,906,061.66/1,900.23
6. Step 6: Final answer
   x = 1,003.07