Finding the Fourth Proportional to 2,631.60, 3,952.78 and 2,544.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.60 : 3,952.78 = 2,544.12 : x
2. Step 2: Convert to fraction form
   2,631.60/3,952.78 = 2,544.12/x
3. Step 3: Cross multiply
   2,631.60x = 3,952.78 × 2,544.12
4. Step 4: Simplify right side
   2,631.60x = 10,056,346.65
5. Step 5: Solve for x
   x = 10,056,346.65/2,631.60
6. Step 6: Final answer
   x = 3,821.38