Finding the Fourth Proportional to 2,763.54, 4,140.99 and 2,415.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,763.54 : 4,140.99 = 2,415.78 : x
2. Step 2: Convert to fraction form
   2,763.54/4,140.99 = 2,415.78/x
3. Step 3: Cross multiply
   2,763.54x = 4,140.99 × 2,415.78
4. Step 4: Simplify right side
   2,763.54x = 10,003,720.82
5. Step 5: Solve for x
   x = 10,003,720.82/2,763.54
6. Step 6: Final answer
   x = 3,619.89