Finding the Fourth Proportional to 2,818.86, 3,889.29 and 1,822.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.86 : 3,889.29 = 1,822.56 : x
2. Step 2: Convert to fraction form
   2,818.86/3,889.29 = 1,822.56/x
3. Step 3: Cross multiply
   2,818.86x = 3,889.29 × 1,822.56
4. Step 4: Simplify right side
   2,818.86x = 7,088,464.38
5. Step 5: Solve for x
   x = 7,088,464.38/2,818.86
6. Step 6: Final answer
   x = 2,514.66