Finding the Fourth Proportional to 2,680.16, 3,698.64 and 1,485.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.16 : 3,698.64 = 1,485.18 : x
2. Step 2: Convert to fraction form
   2,680.16/3,698.64 = 1,485.18/x
3. Step 3: Cross multiply
   2,680.16x = 3,698.64 × 1,485.18
4. Step 4: Simplify right side
   2,680.16x = 5,493,146.16
5. Step 5: Solve for x
   x = 5,493,146.16/2,680.16
6. Step 6: Final answer
   x = 2,049.56