Finding the Fourth Proportional to 2,272.06, 3,408.17 and 628.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,272.06 : 3,408.17 = 628.73 : x
2. Step 2: Convert to fraction form
   2,272.06/3,408.17 = 628.73/x
3. Step 3: Cross multiply
   2,272.06x = 3,408.17 × 628.73
4. Step 4: Simplify right side
   2,272.06x = 2,142,818.72
5. Step 5: Solve for x
   x = 2,142,818.72/2,272.06
6. Step 6: Final answer
   x = 943.12