Finding the Fourth Proportional to 3,112.62, 4,662.45 and 2,279.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,112.62 : 4,662.45 = 2,279.10 : x
2. Step 2: Convert to fraction form
   3,112.62/4,662.45 = 2,279.10/x
3. Step 3: Cross multiply
   3,112.62x = 4,662.45 × 2,279.10
4. Step 4: Simplify right side
   3,112.62x = 10,626,189.80
5. Step 5: Solve for x
   x = 10,626,189.80/3,112.62
6. Step 6: Final answer
   x = 3,413.91