Finding the Fourth Proportional to 2,425.55, 3,638.12 and 1,255.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,425.55 : 3,638.12 = 1,255.50 : x
2. Step 2: Convert to fraction form
   2,425.55/3,638.12 = 1,255.50/x
3. Step 3: Cross multiply
   2,425.55x = 3,638.12 × 1,255.50
4. Step 4: Simplify right side
   2,425.55x = 4,567,653.38
5. Step 5: Solve for x
   x = 4,567,653.38/2,425.55
6. Step 6: Final answer
   x = 1,883.15