Finding the Fourth Proportional to 2,880.96, 4,320.72 and 1,148.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,880.96 : 4,320.72 = 1,148.64 : x
2. Step 2: Convert to fraction form
   2,880.96/4,320.72 = 1,148.64/x
3. Step 3: Cross multiply
   2,880.96x = 4,320.72 × 1,148.64
4. Step 4: Simplify right side
   2,880.96x = 4,962,951.82
5. Step 5: Solve for x
   x = 4,962,951.82/2,880.96
6. Step 6: Final answer
   x = 1,722.67