Finding the Fourth Proportional to 2,854.50, 4,283.64 and 1,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,854.50 : 4,283.64 = 1,315.50 : x
2. Step 2: Convert to fraction form
   2,854.50/4,283.64 = 1,315.50/x
3. Step 3: Cross multiply
   2,854.50x = 4,283.64 × 1,315.50
4. Step 4: Simplify right side
   2,854.50x = 5,635,128.42
5. Step 5: Solve for x
   x = 5,635,128.42/2,854.50
6. Step 6: Final answer
   x = 1,974.12