Finding the Fourth Proportional to 2,148.30, 3,218.31 and 1,822.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.30 : 3,218.31 = 1,822.86 : x
2. Step 2: Convert to fraction form
   2,148.30/3,218.31 = 1,822.86/x
3. Step 3: Cross multiply
   2,148.30x = 3,218.31 × 1,822.86
4. Step 4: Simplify right side
   2,148.30x = 5,866,528.57
5. Step 5: Solve for x
   x = 5,866,528.57/2,148.30
6. Step 6: Final answer
   x = 2,730.78