Finding the Fourth Proportional to 1,362.21, 2,042.82 and 581.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.21 : 2,042.82 = 581.82 : x
2. Step 2: Convert to fraction form
   1,362.21/2,042.82 = 581.82/x
3. Step 3: Cross multiply
   1,362.21x = 2,042.82 × 581.82
4. Step 4: Simplify right side
   1,362.21x = 1,188,553.53
5. Step 5: Solve for x
   x = 1,188,553.53/1,362.21
6. Step 6: Final answer
   x = 872.52