Finding the Fourth Proportional to 2,631.72, 3,944.07 and 1,397.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.72 : 3,944.07 = 1,397.82 : x
2. Step 2: Convert to fraction form
   2,631.72/3,944.07 = 1,397.82/x
3. Step 3: Cross multiply
   2,631.72x = 3,944.07 × 1,397.82
4. Step 4: Simplify right side
   2,631.72x = 5,513,099.93
5. Step 5: Solve for x
   x = 5,513,099.93/2,631.72
6. Step 6: Final answer
   x = 2,094.87