Finding the Fourth Proportional to 2,880.45, 4,320.72 and 1,149.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,880.45 : 4,320.72 = 1,149.03 : x
2. Step 2: Convert to fraction form
   2,880.45/4,320.72 = 1,149.03/x
3. Step 3: Cross multiply
   2,880.45x = 4,320.72 × 1,149.03
4. Step 4: Simplify right side
   2,880.45x = 4,964,636.90
5. Step 5: Solve for x
   x = 4,964,636.90/2,880.45
6. Step 6: Final answer
   x = 1,723.56