Finding the Fourth Proportional to 2,939.20, 4,056.42 and 1,760.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,939.20 : 4,056.42 = 1,760.56 : x
2. Step 2: Convert to fraction form
   2,939.20/4,056.42 = 1,760.56/x
3. Step 3: Cross multiply
   2,939.20x = 4,056.42 × 1,760.56
4. Step 4: Simplify right side
   2,939.20x = 7,141,570.80
5. Step 5: Solve for x
   x = 7,141,570.80/2,939.20
6. Step 6: Final answer
   x = 2,429.77