Finding the Fourth Proportional to 2,308.50, 3,185.73 and 1,260.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.50 : 3,185.73 = 1,260.56 : x
2. Step 2: Convert to fraction form
   2,308.50/3,185.73 = 1,260.56/x
3. Step 3: Cross multiply
   2,308.50x = 3,185.73 × 1,260.56
4. Step 4: Simplify right side
   2,308.50x = 4,015,811.77
5. Step 5: Solve for x
   x = 4,015,811.77/2,308.50
6. Step 6: Final answer
   x = 1,739.58