Finding the Fourth Proportional to 2,947.31, 4,420.92 and 756.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,947.31 : 4,420.92 = 756.02 : x
2. Step 2: Convert to fraction form
   2,947.31/4,420.92 = 756.02/x
3. Step 3: Cross multiply
   2,947.31x = 4,420.92 × 756.02
4. Step 4: Simplify right side
   2,947.31x = 3,342,303.94
5. Step 5: Solve for x
   x = 3,342,303.94/2,947.31
6. Step 6: Final answer
   x = 1,134.02