Finding the Fourth Proportional to 3,945.30, 5,445.72 and 2,351.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.30 : 5,445.72 = 2,351.94 : x
2. Step 2: Convert to fraction form
   3,945.30/5,445.72 = 2,351.94/x
3. Step 3: Cross multiply
   3,945.30x = 5,445.72 × 2,351.94
4. Step 4: Simplify right side
   3,945.30x = 12,808,006.70
5. Step 5: Solve for x
   x = 12,808,006.70/3,945.30
6. Step 6: Final answer
   x = 3,246.40