Finding the Fourth Proportional to 3,012.84, 4,516.83 and 1,280.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,012.84 : 4,516.83 = 1,280.25 : x
2. Step 2: Convert to fraction form
   3,012.84/4,516.83 = 1,280.25/x
3. Step 3: Cross multiply
   3,012.84x = 4,516.83 × 1,280.25
4. Step 4: Simplify right side
   3,012.84x = 5,782,671.61
5. Step 5: Solve for x
   x = 5,782,671.61/3,012.84
6. Step 6: Final answer
   x = 1,919.34