Finding the Fourth Proportional to 2,308.82, 3,186.17 and 1,260.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.82 : 3,186.17 = 1,260.87 : x
2. Step 2: Convert to fraction form
   2,308.82/3,186.17 = 1,260.87/x
3. Step 3: Cross multiply
   2,308.82x = 3,186.17 × 1,260.87
4. Step 4: Simplify right side
   2,308.82x = 4,017,339.86
5. Step 5: Solve for x
   x = 4,017,339.86/2,308.82
6. Step 6: Final answer
   x = 1,740.00