Finding the Fourth Proportional to 2,427.56, 3,644.97 and 1,388.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,427.56 : 3,644.97 = 1,388.73 : x
2. Step 2: Convert to fraction form
   2,427.56/3,644.97 = 1,388.73/x
3. Step 3: Cross multiply
   2,427.56x = 3,644.97 × 1,388.73
4. Step 4: Simplify right side
   2,427.56x = 5,061,879.19
5. Step 5: Solve for x
   x = 5,061,879.19/2,427.56
6. Step 6: Final answer
   x = 2,085.18