Finding the Fourth Proportional to 2,561.16, 3,838.86 and 1,263.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.16 : 3,838.86 = 1,263.54 : x
2. Step 2: Convert to fraction form
   2,561.16/3,838.86 = 1,263.54/x
3. Step 3: Cross multiply
   2,561.16x = 3,838.86 × 1,263.54
4. Step 4: Simplify right side
   2,561.16x = 4,850,553.16
5. Step 5: Solve for x
   x = 4,850,553.16/2,561.16
6. Step 6: Final answer
   x = 1,893.89