Finding the Fourth Proportional to 2,515.57, 3,775.68 and 1,283.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515.57 : 3,775.68 = 1,283.89 : x
2. Step 2: Convert to fraction form
   2,515.57/3,775.68 = 1,283.89/x
3. Step 3: Cross multiply
   2,515.57x = 3,775.68 × 1,283.89
4. Step 4: Simplify right side
   2,515.57x = 4,847,557.80
5. Step 5: Solve for x
   x = 4,847,557.80/2,515.57
6. Step 6: Final answer
   x = 1,927.02