Finding the Fourth Proportional to 3,081.74, 4,623.27 and 890.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,081.74 : 4,623.27 = 890.28 : x
2. Step 2: Convert to fraction form
   3,081.74/4,623.27 = 890.28/x
3. Step 3: Cross multiply
   3,081.74x = 4,623.27 × 890.28
4. Step 4: Simplify right side
   3,081.74x = 4,116,004.82
5. Step 5: Solve for x
   x = 4,116,004.82/3,081.74
6. Step 6: Final answer
   x = 1,335.61