Finding the Fourth Proportional to 2,816.86, 4,222.56 and 1,355.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,816.86 : 4,222.56 = 1,355.22 : x
2. Step 2: Convert to fraction form
   2,816.86/4,222.56 = 1,355.22/x
3. Step 3: Cross multiply
   2,816.86x = 4,222.56 × 1,355.22
4. Step 4: Simplify right side
   2,816.86x = 5,722,494.05
5. Step 5: Solve for x
   x = 5,722,494.05/2,816.86
6. Step 6: Final answer
   x = 2,031.51