Finding the Fourth Proportional to 2,260.78, 3,119.71 and 1,265.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,260.78 : 3,119.71 = 1,265.93 : x
2. Step 2: Convert to fraction form
   2,260.78/3,119.71 = 1,265.93/x
3. Step 3: Cross multiply
   2,260.78x = 3,119.71 × 1,265.93
4. Step 4: Simplify right side
   2,260.78x = 3,949,317.03
5. Step 5: Solve for x
   x = 3,949,317.03/2,260.78
6. Step 6: Final answer
   x = 1,746.88