Finding the Fourth Proportional to 3,100.80, 4,274.10 and 2,436.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.80 : 4,274.10 = 2,436.60 : x
2. Step 2: Convert to fraction form
   3,100.80/4,274.10 = 2,436.60/x
3. Step 3: Cross multiply
   3,100.80x = 4,274.10 × 2,436.60
4. Step 4: Simplify right side
   3,100.80x = 10,414,272.06
5. Step 5: Solve for x
   x = 10,414,272.06/3,100.80
6. Step 6: Final answer
   x = 3,358.58