Finding the Fourth Proportional to 3,851.69, 5,316.65 and 2,258.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,851.69 : 5,316.65 = 2,258.85 : x
2. Step 2: Convert to fraction form
   3,851.69/5,316.65 = 2,258.85/x
3. Step 3: Cross multiply
   3,851.69x = 5,316.65 × 2,258.85
4. Step 4: Simplify right side
   3,851.69x = 12,009,520.50
5. Step 5: Solve for x
   x = 12,009,520.50/3,851.69
6. Step 6: Final answer
   x = 3,117.99