Finding the Fourth Proportional to 2,617.48, 3,926.79 and 862.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.48 : 3,926.79 = 862.41 : x
2. Step 2: Convert to fraction form
   2,617.48/3,926.79 = 862.41/x
3. Step 3: Cross multiply
   2,617.48x = 3,926.79 × 862.41
4. Step 4: Simplify right side
   2,617.48x = 3,386,499.25
5. Step 5: Solve for x
   x = 3,386,499.25/2,617.48
6. Step 6: Final answer
   x = 1,293.80