Finding the Fourth Proportional to 2,634.78, 3,947.31 and 1,337.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,634.78 : 3,947.31 = 1,337.16 : x
2. Step 2: Convert to fraction form
   2,634.78/3,947.31 = 1,337.16/x
3. Step 3: Cross multiply
   2,634.78x = 3,947.31 × 1,337.16
4. Step 4: Simplify right side
   2,634.78x = 5,278,185.04
5. Step 5: Solve for x
   x = 5,278,185.04/2,634.78
6. Step 6: Final answer
   x = 2,003.27