Finding the Fourth Proportional to 2,175.69, 3,268.71 and 1,397.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175.69 : 3,268.71 = 1,397.19 : x
2. Step 2: Convert to fraction form
   2,175.69/3,268.71 = 1,397.19/x
3. Step 3: Cross multiply
   2,175.69x = 3,268.71 × 1,397.19
4. Step 4: Simplify right side
   2,175.69x = 4,567,019.87
5. Step 5: Solve for x
   x = 4,567,019.87/2,175.69
6. Step 6: Final answer
   x = 2,099.12