Finding the Fourth Proportional to 2,064.69, 2,847.85 and 1,318.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.69 : 2,847.85 = 1,318.31 : x
2. Step 2: Convert to fraction form
   2,064.69/2,847.85 = 1,318.31/x
3. Step 3: Cross multiply
   2,064.69x = 2,847.85 × 1,318.31
4. Step 4: Simplify right side
   2,064.69x = 3,754,345.31
5. Step 5: Solve for x
   x = 3,754,345.31/2,064.69
6. Step 6: Final answer
   x = 1,818.36