Finding the Fourth Proportional to 2,143.86, 3,212.85 and 1,046.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.86 : 3,212.85 = 1,046.16 : x
2. Step 2: Convert to fraction form
   2,143.86/3,212.85 = 1,046.16/x
3. Step 3: Cross multiply
   2,143.86x = 3,212.85 × 1,046.16
4. Step 4: Simplify right side
   2,143.86x = 3,361,155.16
5. Step 5: Solve for x
   x = 3,361,155.16/2,143.86
6. Step 6: Final answer
   x = 1,567.81