Finding the Fourth Proportional to 2,436.05, 3,361.79 and 1,388.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.05 : 3,361.79 = 1,388.09 : x
2. Step 2: Convert to fraction form
   2,436.05/3,361.79 = 1,388.09/x
3. Step 3: Cross multiply
   2,436.05x = 3,361.79 × 1,388.09
4. Step 4: Simplify right side
   2,436.05x = 4,666,467.08
5. Step 5: Solve for x
   x = 4,666,467.08/2,436.05
6. Step 6: Final answer
   x = 1,915.59