Finding the Fourth Proportional to 2,185.82, 3,279.16 and 725.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.82 : 3,279.16 = 725.06 : x
2. Step 2: Convert to fraction form
   2,185.82/3,279.16 = 725.06/x
3. Step 3: Cross multiply
   2,185.82x = 3,279.16 × 725.06
4. Step 4: Simplify right side
   2,185.82x = 2,377,587.75
5. Step 5: Solve for x
   x = 2,377,587.75/2,185.82
6. Step 6: Final answer
   x = 1,087.73