Finding the Fourth Proportional to 2,636.78, 3,957.14 and 1,250.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.78 : 3,957.14 = 1,250.50 : x
2. Step 2: Convert to fraction form
   2,636.78/3,957.14 = 1,250.50/x
3. Step 3: Cross multiply
   2,636.78x = 3,957.14 × 1,250.50
4. Step 4: Simplify right side
   2,636.78x = 4,948,403.57
5. Step 5: Solve for x
   x = 4,948,403.57/2,636.78
6. Step 6: Final answer
   x = 1,876.68