Finding the Fourth Proportional to 2,168.88, 3,256.56 and 2,076.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.88 : 3,256.56 = 2,076.72 : x
2. Step 2: Convert to fraction form
   2,168.88/3,256.56 = 2,076.72/x
3. Step 3: Cross multiply
   2,168.88x = 3,256.56 × 2,076.72
4. Step 4: Simplify right side
   2,168.88x = 6,762,963.28
5. Step 5: Solve for x
   x = 6,762,963.28/2,168.88
6. Step 6: Final answer
   x = 3,118.18