Finding the Fourth Proportional to 2,817, 4,225.42 and 1,256.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,817 : 4,225.42 = 1,256.60 : x
2. Step 2: Convert to fraction form
   2,817/4,225.42 = 1,256.60/x
3. Step 3: Cross multiply
   2,817x = 4,225.42 × 1,256.60
4. Step 4: Simplify right side
   2,817x = 5,309,662.77
5. Step 5: Solve for x
   x = 5,309,662.77/2,817
6. Step 6: Final answer
   x = 1,884.86