Finding the Fourth Proportional to 2,271.50, 3,407.18 and 628.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.50 : 3,407.18 = 628.04 : x
2. Step 2: Convert to fraction form
   2,271.50/3,407.18 = 628.04/x
3. Step 3: Cross multiply
   2,271.50x = 3,407.18 × 628.04
4. Step 4: Simplify right side
   2,271.50x = 2,139,845.33
5. Step 5: Solve for x
   x = 2,139,845.33/2,271.50
6. Step 6: Final answer
   x = 942.04