Finding the Fourth Proportional to 3,414.72, 5,123.35 and 1,440.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,414.72 : 5,123.35 = 1,440.86 : x
2. Step 2: Convert to fraction form
   3,414.72/5,123.35 = 1,440.86/x
3. Step 3: Cross multiply
   3,414.72x = 5,123.35 × 1,440.86
4. Step 4: Simplify right side
   3,414.72x = 7,382,030.08
5. Step 5: Solve for x
   x = 7,382,030.08/3,414.72
6. Step 6: Final answer
   x = 2,161.83