Finding the Fourth Proportional to 2,618.88, 3,927.48 and 863.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.88 : 3,927.48 = 863.52 : x
2. Step 2: Convert to fraction form
   2,618.88/3,927.48 = 863.52/x
3. Step 3: Cross multiply
   2,618.88x = 3,927.48 × 863.52
4. Step 4: Simplify right side
   2,618.88x = 3,391,457.53
5. Step 5: Solve for x
   x = 3,391,457.53/2,618.88
6. Step 6: Final answer
   x = 1,295.00