Finding the Fourth Proportional to 2,627.98, 3,940.18 and 1,310.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,627.98 : 3,940.18 = 1,310.06 : x
2. Step 2: Convert to fraction form
   2,627.98/3,940.18 = 1,310.06/x
3. Step 3: Cross multiply
   2,627.98x = 3,940.18 × 1,310.06
4. Step 4: Simplify right side
   2,627.98x = 5,161,872.21
5. Step 5: Solve for x
   x = 5,161,872.21/2,627.98
6. Step 6: Final answer
   x = 1,964.20