Finding the Fourth Proportional to 2,261.76, 3,393.20 and 722.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261.76 : 3,393.20 = 722.72 : x
2. Step 2: Convert to fraction form
   2,261.76/3,393.20 = 722.72/x
3. Step 3: Cross multiply
   2,261.76x = 3,393.20 × 722.72
4. Step 4: Simplify right side
   2,261.76x = 2,452,333.50
5. Step 5: Solve for x
   x = 2,452,333.50/2,261.76
6. Step 6: Final answer
   x = 1,084.26