Finding the Fourth Proportional to 2,766.24, 3,813.35 and 1,978.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.24 : 3,813.35 = 1,978.92 : x
2. Step 2: Convert to fraction form
   2,766.24/3,813.35 = 1,978.92/x
3. Step 3: Cross multiply
   2,766.24x = 3,813.35 × 1,978.92
4. Step 4: Simplify right side
   2,766.24x = 7,546,304.69
5. Step 5: Solve for x
   x = 7,546,304.69/2,766.24
6. Step 6: Final answer
   x = 2,728.00