Finding the Fourth Proportional to 2,880.64, 3,974.61 and 2,250.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,880.64 : 3,974.61 = 2,250.05 : x
2. Step 2: Convert to fraction form
   2,880.64/3,974.61 = 2,250.05/x
3. Step 3: Cross multiply
   2,880.64x = 3,974.61 × 2,250.05
4. Step 4: Simplify right side
   2,880.64x = 8,943,077.51
5. Step 5: Solve for x
   x = 8,943,077.51/2,880.64
6. Step 6: Final answer
   x = 3,104.55