Finding the Fourth Proportional to 2,945.56, 4,418.31 and 754.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.56 : 4,418.31 = 754.28 : x
2. Step 2: Convert to fraction form
   2,945.56/4,418.31 = 754.28/x
3. Step 3: Cross multiply
   2,945.56x = 4,418.31 × 754.28
4. Step 4: Simplify right side
   2,945.56x = 3,332,642.87
5. Step 5: Solve for x
   x = 3,332,642.87/2,945.56
6. Step 6: Final answer
   x = 1,131.41