Finding the Fourth Proportional to 2,583.47, 3,872.13 and 1,485.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,583.47 : 3,872.13 = 1,485.57 : x
2. Step 2: Convert to fraction form
   2,583.47/3,872.13 = 1,485.57/x
3. Step 3: Cross multiply
   2,583.47x = 3,872.13 × 1,485.57
4. Step 4: Simplify right side
   2,583.47x = 5,752,300.62
5. Step 5: Solve for x
   x = 5,752,300.62/2,583.47
6. Step 6: Final answer
   x = 2,226.58