Finding the Fourth Proportional to 2,142.35, 3,214.89 and 1,622.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.35 : 3,214.89 = 1,622.94 : x
2. Step 2: Convert to fraction form
   2,142.35/3,214.89 = 1,622.94/x
3. Step 3: Cross multiply
   2,142.35x = 3,214.89 × 1,622.94
4. Step 4: Simplify right side
   2,142.35x = 5,217,561.52
5. Step 5: Solve for x
   x = 5,217,561.52/2,142.35
6. Step 6: Final answer
   x = 2,435.44