Finding the Fourth Proportional to 2,924.10, 4,385.25 and 1,280.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,924.10 : 4,385.25 = 1,280.25 : x
2. Step 2: Convert to fraction form
   2,924.10/4,385.25 = 1,280.25/x
3. Step 3: Cross multiply
   2,924.10x = 4,385.25 × 1,280.25
4. Step 4: Simplify right side
   2,924.10x = 5,614,216.31
5. Step 5: Solve for x
   x = 5,614,216.31/2,924.10
6. Step 6: Final answer
   x = 1,919.98