Finding the Fourth Proportional to 3,116.82, 4,670.78 and 2,288.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,116.82 : 4,670.78 = 2,288.60 : x
2. Step 2: Convert to fraction form
   3,116.82/4,670.78 = 2,288.60/x
3. Step 3: Cross multiply
   3,116.82x = 4,670.78 × 2,288.60
4. Step 4: Simplify right side
   3,116.82x = 10,689,512.31
5. Step 5: Solve for x
   x = 10,689,512.31/3,116.82
6. Step 6: Final answer
   x = 3,429.62