Finding the Fourth Proportional to 2,144.66, 2,964.56 and 1,972.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.66 : 2,964.56 = 1,972.45 : x
2. Step 2: Convert to fraction form
   2,144.66/2,964.56 = 1,972.45/x
3. Step 3: Cross multiply
   2,144.66x = 2,964.56 × 1,972.45
4. Step 4: Simplify right side
   2,144.66x = 5,847,446.37
5. Step 5: Solve for x
   x = 5,847,446.37/2,144.66
6. Step 6: Final answer
   x = 2,726.51