Finding the Fourth Proportional to 2,947.56, 4,421.31 and 756.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,947.56 : 4,421.31 = 756.28 : x
2. Step 2: Convert to fraction form
   2,947.56/4,421.31 = 756.28/x
3. Step 3: Cross multiply
   2,947.56x = 4,421.31 × 756.28
4. Step 4: Simplify right side
   2,947.56x = 3,343,748.33
5. Step 5: Solve for x
   x = 3,343,748.33/2,947.56
6. Step 6: Final answer
   x = 1,134.41