Finding the Fourth Proportional to 2,141.73, 3,212.79 and 581.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.73 : 3,212.79 = 581.82 : x
2. Step 2: Convert to fraction form
   2,141.73/3,212.79 = 581.82/x
3. Step 3: Cross multiply
   2,141.73x = 3,212.79 × 581.82
4. Step 4: Simplify right side
   2,141.73x = 1,869,265.48
5. Step 5: Solve for x
   x = 1,869,265.48/2,141.73
6. Step 6: Final answer
   x = 872.78