Finding the Fourth Proportional to 3,118.22, 4,678.83 and 1,270.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,118.22 : 4,678.83 = 1,270.61 : x
2. Step 2: Convert to fraction form
   3,118.22/4,678.83 = 1,270.61/x
3. Step 3: Cross multiply
   3,118.22x = 4,678.83 × 1,270.61
4. Step 4: Simplify right side
   3,118.22x = 5,944,944.79
5. Step 5: Solve for x
   x = 5,944,944.79/3,118.22
6. Step 6: Final answer
   x = 1,906.52