Finding the Fourth Proportional to 2,278.22, 3,156.56 and 2,229.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,278.22 : 3,156.56 = 2,229.02 : x
2. Step 2: Convert to fraction form
   2,278.22/3,156.56 = 2,229.02/x
3. Step 3: Cross multiply
   2,278.22x = 3,156.56 × 2,229.02
4. Step 4: Simplify right side
   2,278.22x = 7,036,035.37
5. Step 5: Solve for x
   x = 7,036,035.37/2,278.22
6. Step 6: Final answer
   x = 3,088.39