Finding the Fourth Proportional to 2,436.04, 3,361.72 and 1,388.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.04 : 3,361.72 = 1,388.09 : x
2. Step 2: Convert to fraction form
   2,436.04/3,361.72 = 1,388.09/x
3. Step 3: Cross multiply
   2,436.04x = 3,361.72 × 1,388.09
4. Step 4: Simplify right side
   2,436.04x = 4,666,369.91
5. Step 5: Solve for x
   x = 4,666,369.91/2,436.04
6. Step 6: Final answer
   x = 1,915.56