Finding the Fourth Proportional to 2,279.34, 3,419.28 and 892.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.34 : 3,419.28 = 892.38 : x
2. Step 2: Convert to fraction form
   2,279.34/3,419.28 = 892.38/x
3. Step 3: Cross multiply
   2,279.34x = 3,419.28 × 892.38
4. Step 4: Simplify right side
   2,279.34x = 3,051,297.09
5. Step 5: Solve for x
   x = 3,051,297.09/2,279.34
6. Step 6: Final answer
   x = 1,338.68