Finding the Fourth Proportional to 2,308.06, 3,185.20 and 1,260.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.06 : 3,185.20 = 1,260.19 : x
2. Step 2: Convert to fraction form
   2,308.06/3,185.20 = 1,260.19/x
3. Step 3: Cross multiply
   2,308.06x = 3,185.20 × 1,260.19
4. Step 4: Simplify right side
   2,308.06x = 4,013,957.19
5. Step 5: Solve for x
   x = 4,013,957.19/2,308.06
6. Step 6: Final answer
   x = 1,739.10