Finding the Fourth Proportional to 2,427.05, 3,644.22 and 1,388.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,427.05 : 3,644.22 = 1,388.23 : x
2. Step 2: Convert to fraction form
   2,427.05/3,644.22 = 1,388.23/x
3. Step 3: Cross multiply
   2,427.05x = 3,644.22 × 1,388.23
4. Step 4: Simplify right side
   2,427.05x = 5,059,015.53
5. Step 5: Solve for x
   x = 5,059,015.53/2,427.05
6. Step 6: Final answer
   x = 2,084.43