Finding the Fourth Proportional to 2,653.09, 3,976.86 and 1,264.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.09 : 3,976.86 = 1,264.35 : x
2. Step 2: Convert to fraction form
   2,653.09/3,976.86 = 1,264.35/x
3. Step 3: Cross multiply
   2,653.09x = 3,976.86 × 1,264.35
4. Step 4: Simplify right side
   2,653.09x = 5,028,142.94
5. Step 5: Solve for x
   x = 5,028,142.94/2,653.09
6. Step 6: Final answer
   x = 1,895.20