Finding the Fourth Proportional to 2,939.70, 4,056.89 and 1,745.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,939.70 : 4,056.89 = 1,745.31 : x
2. Step 2: Convert to fraction form
   2,939.70/4,056.89 = 1,745.31/x
3. Step 3: Cross multiply
   2,939.70x = 4,056.89 × 1,745.31
4. Step 4: Simplify right side
   2,939.70x = 7,080,530.69
5. Step 5: Solve for x
   x = 7,080,530.69/2,939.70
6. Step 6: Final answer
   x = 2,408.59