Finding the Fourth Proportional to 3,147.12, 4,717.17 and 1,065.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,147.12 : 4,717.17 = 1,065.15 : x
2. Step 2: Convert to fraction form
   3,147.12/4,717.17 = 1,065.15/x
3. Step 3: Cross multiply
   3,147.12x = 4,717.17 × 1,065.15
4. Step 4: Simplify right side
   3,147.12x = 5,024,493.63
5. Step 5: Solve for x
   x = 5,024,493.63/3,147.12
6. Step 6: Final answer
   x = 1,596.54