Finding the Fourth Proportional to 1,447.62, 2,172.72 and 668.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.62 : 2,172.72 = 668.82 : x
2. Step 2: Convert to fraction form
   1,447.62/2,172.72 = 668.82/x
3. Step 3: Cross multiply
   1,447.62x = 2,172.72 × 668.82
4. Step 4: Simplify right side
   1,447.62x = 1,453,158.59
5. Step 5: Solve for x
   x = 1,453,158.59/1,447.62
6. Step 6: Final answer
   x = 1,003.83