Finding the Fourth Proportional to 2,308.86, 3,186.29 and 1,260.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.86 : 3,186.29 = 1,260.92 : x
2. Step 2: Convert to fraction form
   2,308.86/3,186.29 = 1,260.92/x
3. Step 3: Cross multiply
   2,308.86x = 3,186.29 × 1,260.92
4. Step 4: Simplify right side
   2,308.86x = 4,017,667.90
5. Step 5: Solve for x
   x = 4,017,667.90/2,308.86
6. Step 6: Final answer
   x = 1,740.11