Finding the Fourth Proportional to 2,162.12, 3,238.90 and 1,429.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.12 : 3,238.90 = 1,429.47 : x
2. Step 2: Convert to fraction form
   2,162.12/3,238.90 = 1,429.47/x
3. Step 3: Cross multiply
   2,162.12x = 3,238.90 × 1,429.47
4. Step 4: Simplify right side
   2,162.12x = 4,629,906.81
5. Step 5: Solve for x
   x = 4,629,906.81/2,162.12
6. Step 6: Final answer
   x = 2,141.38