Finding the Fourth Proportional to 2,216.75, 3,320.69 and 1,434.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.75 : 3,320.69 = 1,434.05 : x
2. Step 2: Convert to fraction form
   2,216.75/3,320.69 = 1,434.05/x
3. Step 3: Cross multiply
   2,216.75x = 3,320.69 × 1,434.05
4. Step 4: Simplify right side
   2,216.75x = 4,762,039.08
5. Step 5: Solve for x
   x = 4,762,039.08/2,216.75
6. Step 6: Final answer
   x = 2,148.21