Finding the Fourth Proportional to 2,583.78, 3,871.89 and 1,283.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,583.78 : 3,871.89 = 1,283.46 : x
2. Step 2: Convert to fraction form
   2,583.78/3,871.89 = 1,283.46/x
3. Step 3: Cross multiply
   2,583.78x = 3,871.89 × 1,283.46
4. Step 4: Simplify right side
   2,583.78x = 4,969,415.94
5. Step 5: Solve for x
   x = 4,969,415.94/2,583.78
6. Step 6: Final answer
   x = 1,923.31