Finding the Fourth Proportional to 2,365.17, 3,546.61 and 721.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,365.17 : 3,546.61 = 721.27 : x
2. Step 2: Convert to fraction form
   2,365.17/3,546.61 = 721.27/x
3. Step 3: Cross multiply
   2,365.17x = 3,546.61 × 721.27
4. Step 4: Simplify right side
   2,365.17x = 2,558,063.39
5. Step 5: Solve for x
   x = 2,558,063.39/2,365.17
6. Step 6: Final answer
   x = 1,081.56