Finding the Fourth Proportional to 2,630.72, 3,947.25 and 1,397.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.72 : 3,947.25 = 1,397.83 : x
2. Step 2: Convert to fraction form
   2,630.72/3,947.25 = 1,397.83/x
3. Step 3: Cross multiply
   2,630.72x = 3,947.25 × 1,397.83
4. Step 4: Simplify right side
   2,630.72x = 5,517,584.47
5. Step 5: Solve for x
   x = 5,517,584.47/2,630.72
6. Step 6: Final answer
   x = 2,097.37