Finding the Fourth Proportional to 2,905.31, 4,355.73 and 1,443.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,905.31 : 4,355.73 = 1,443.33 : x
2. Step 2: Convert to fraction form
   2,905.31/4,355.73 = 1,443.33/x
3. Step 3: Cross multiply
   2,905.31x = 4,355.73 × 1,443.33
4. Step 4: Simplify right side
   2,905.31x = 6,286,755.78
5. Step 5: Solve for x
   x = 6,286,755.78/2,905.31
6. Step 6: Final answer
   x = 2,163.88