Finding the Fourth Proportional to 2,938.32, 4,407.47 and 717.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,938.32 : 4,407.47 = 717.15 : x
2. Step 2: Convert to fraction form
   2,938.32/4,407.47 = 717.15/x
3. Step 3: Cross multiply
   2,938.32x = 4,407.47 × 717.15
4. Step 4: Simplify right side
   2,938.32x = 3,160,818.90
5. Step 5: Solve for x
   x = 3,160,818.90/2,938.32
6. Step 6: Final answer
   x = 1,075.72