Finding the Fourth Proportional to 2,436.21, 3,362.04 and 1,388.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.21 : 3,362.04 = 1,388.25 : x
2. Step 2: Convert to fraction form
   2,436.21/3,362.04 = 1,388.25/x
3. Step 3: Cross multiply
   2,436.21x = 3,362.04 × 1,388.25
4. Step 4: Simplify right side
   2,436.21x = 4,667,352.03
5. Step 5: Solve for x
   x = 4,667,352.03/2,436.21
6. Step 6: Final answer
   x = 1,915.83