Finding the Fourth Proportional to 2,945.78, 4,411.37 and 1,644.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.78 : 4,411.37 = 1,644.51 : x
2. Step 2: Convert to fraction form
   2,945.78/4,411.37 = 1,644.51/x
3. Step 3: Cross multiply
   2,945.78x = 4,411.37 × 1,644.51
4. Step 4: Simplify right side
   2,945.78x = 7,254,546.19
5. Step 5: Solve for x
   x = 7,254,546.19/2,945.78
6. Step 6: Final answer
   x = 2,462.70