Finding the Fourth Proportional to 2,087.82, 3,131.37 and 548.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.82 : 3,131.37 = 548.82 : x
2. Step 2: Convert to fraction form
   2,087.82/3,131.37 = 548.82/x
3. Step 3: Cross multiply
   2,087.82x = 3,131.37 × 548.82
4. Step 4: Simplify right side
   2,087.82x = 1,718,558.48
5. Step 5: Solve for x
   x = 1,718,558.48/2,087.82
6. Step 6: Final answer
   x = 823.14