Finding the Fourth Proportional to 2,866.23, 3,945.78 and 2,551.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,866.23 : 3,945.78 = 2,551.02 : x
2. Step 2: Convert to fraction form
   2,866.23/3,945.78 = 2,551.02/x
3. Step 3: Cross multiply
   2,866.23x = 3,945.78 × 2,551.02
4. Step 4: Simplify right side
   2,866.23x = 10,065,763.70
5. Step 5: Solve for x
   x = 10,065,763.70/2,866.23
6. Step 6: Final answer
   x = 3,511.85