Finding the Fourth Proportional to 3,601.49, 4,970.28 and 2,185.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,601.49 : 4,970.28 = 2,185.31 : x
2. Step 2: Convert to fraction form
   3,601.49/4,970.28 = 2,185.31/x
3. Step 3: Cross multiply
   3,601.49x = 4,970.28 × 2,185.31
4. Step 4: Simplify right side
   3,601.49x = 10,861,602.59
5. Step 5: Solve for x
   x = 10,861,602.59/3,601.49
6. Step 6: Final answer
   x = 3,015.86