Finding the Fourth Proportional to 2,123.66, 3,171.18 and 1,734.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.66 : 3,171.18 = 1,734.42 : x
2. Step 2: Convert to fraction form
   2,123.66/3,171.18 = 1,734.42/x
3. Step 3: Cross multiply
   2,123.66x = 3,171.18 × 1,734.42
4. Step 4: Simplify right side
   2,123.66x = 5,500,158.02
5. Step 5: Solve for x
   x = 5,500,158.02/2,123.66
6. Step 6: Final answer
   x = 2,589.94