Finding the Fourth Proportional to 2,640.96, 3,644.46 and 1,445.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.96 : 3,644.46 = 1,445.94 : x
2. Step 2: Convert to fraction form
   2,640.96/3,644.46 = 1,445.94/x
3. Step 3: Cross multiply
   2,640.96x = 3,644.46 × 1,445.94
4. Step 4: Simplify right side
   2,640.96x = 5,269,670.49
5. Step 5: Solve for x
   x = 5,269,670.49/2,640.96
6. Step 6: Final answer
   x = 1,995.36