Finding the Fourth Proportional to 2,511.34, 3,766.53 and 867.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,511.34 : 3,766.53 = 867.89 : x
2. Step 2: Convert to fraction form
   2,511.34/3,766.53 = 867.89/x
3. Step 3: Cross multiply
   2,511.34x = 3,766.53 × 867.89
4. Step 4: Simplify right side
   2,511.34x = 3,268,946.39
5. Step 5: Solve for x
   x = 3,268,946.39/2,511.34
6. Step 6: Final answer
   x = 1,301.68