Finding the Fourth Proportional to 2,227.61, 3,339.33 and 766.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,227.61 : 3,339.33 = 766.41 : x
2. Step 2: Convert to fraction form
   2,227.61/3,339.33 = 766.41/x
3. Step 3: Cross multiply
   2,227.61x = 3,339.33 × 766.41
4. Step 4: Simplify right side
   2,227.61x = 2,559,295.91
5. Step 5: Solve for x
   x = 2,559,295.91/2,227.61
6. Step 6: Final answer
   x = 1,148.90