Finding the Fourth Proportional to 2,187.18, 3,017.97 and 1,255.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.18 : 3,017.97 = 1,255.50 : x
2. Step 2: Convert to fraction form
   2,187.18/3,017.97 = 1,255.50/x
3. Step 3: Cross multiply
   2,187.18x = 3,017.97 × 1,255.50
4. Step 4: Simplify right side
   2,187.18x = 3,789,061.34
5. Step 5: Solve for x
   x = 3,789,061.34/2,187.18
6. Step 6: Final answer
   x = 1,732.40