Finding the Fourth Proportional to 3,081.82, 4,621.82 and 890.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,081.82 : 4,621.82 = 890.57 : x
2. Step 2: Convert to fraction form
   3,081.82/4,621.82 = 890.57/x
3. Step 3: Cross multiply
   3,081.82x = 4,621.82 × 890.57
4. Step 4: Simplify right side
   3,081.82x = 4,116,054.24
5. Step 5: Solve for x
   x = 4,116,054.24/3,081.82
6. Step 6: Final answer
   x = 1,335.59