Finding the Fourth Proportional to 2,279.92, 3,419.56 and 740.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.92 : 3,419.56 = 740.72 : x
2. Step 2: Convert to fraction form
   2,279.92/3,419.56 = 740.72/x
3. Step 3: Cross multiply
   2,279.92x = 3,419.56 × 740.72
4. Step 4: Simplify right side
   2,279.92x = 2,532,936.48
5. Step 5: Solve for x
   x = 2,532,936.48/2,279.92
6. Step 6: Final answer
   x = 1,110.98