Finding the Fourth Proportional to 2,168.74, 3,238.48 and 2,145.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.74 : 3,238.48 = 2,145.86 : x
2. Step 2: Convert to fraction form
   2,168.74/3,238.48 = 2,145.86/x
3. Step 3: Cross multiply
   2,168.74x = 3,238.48 × 2,145.86
4. Step 4: Simplify right side
   2,168.74x = 6,949,324.69
5. Step 5: Solve for x
   x = 6,949,324.69/2,168.74
6. Step 6: Final answer
   x = 3,204.31