Finding the Fourth Proportional to 2,853.82, 4,281.33 and 905.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,853.82 : 4,281.33 = 905.98 : x
2. Step 2: Convert to fraction form
   2,853.82/4,281.33 = 905.98/x
3. Step 3: Cross multiply
   2,853.82x = 4,281.33 × 905.98
4. Step 4: Simplify right side
   2,853.82x = 3,878,799.35
5. Step 5: Solve for x
   x = 3,878,799.35/2,853.82
6. Step 6: Final answer
   x = 1,359.16