Finding the Fourth Proportional to 2,279.56, 3,419.52 and 818.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.56 : 3,419.52 = 818.32 : x
2. Step 2: Convert to fraction form
   2,279.56/3,419.52 = 818.32/x
3. Step 3: Cross multiply
   2,279.56x = 3,419.52 × 818.32
4. Step 4: Simplify right side
   2,279.56x = 2,798,261.61
5. Step 5: Solve for x
   x = 2,798,261.61/2,279.56
6. Step 6: Final answer
   x = 1,227.54