Finding the Fourth Proportional to 2,945.40, 4,414.82 and 1,212.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.40 : 4,414.82 = 1,212.52 : x
2. Step 2: Convert to fraction form
   2,945.40/4,414.82 = 1,212.52/x
3. Step 3: Cross multiply
   2,945.40x = 4,414.82 × 1,212.52
4. Step 4: Simplify right side
   2,945.40x = 5,353,057.55
5. Step 5: Solve for x
   x = 5,353,057.55/2,945.40
6. Step 6: Final answer
   x = 1,817.43