Finding the Fourth Proportional to 3,085.98, 4,258.89 and 2,554.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,085.98 : 4,258.89 = 2,554.71 : x
2. Step 2: Convert to fraction form
   3,085.98/4,258.89 = 2,554.71/x
3. Step 3: Cross multiply
   3,085.98x = 4,258.89 × 2,554.71
4. Step 4: Simplify right side
   3,085.98x = 10,880,228.87
5. Step 5: Solve for x
   x = 10,880,228.87/3,085.98
6. Step 6: Final answer
   x = 3,525.70