Finding the Fourth Proportional to 3,147.10, 4,716.18 and 2,318.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,147.10 : 4,716.18 = 2,318.86 : x
2. Step 2: Convert to fraction form
   3,147.10/4,716.18 = 2,318.86/x
3. Step 3: Cross multiply
   3,147.10x = 4,716.18 × 2,318.86
4. Step 4: Simplify right side
   3,147.10x = 10,936,161.15
5. Step 5: Solve for x
   x = 10,936,161.15/3,147.10
6. Step 6: Final answer
   x = 3,475.00