Finding the Fourth Proportional to 2,436.30, 3,362.13 and 1,388.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.30 : 3,362.13 = 1,388.34 : x
2. Step 2: Convert to fraction form
   2,436.30/3,362.13 = 1,388.34/x
3. Step 3: Cross multiply
   2,436.30x = 3,362.13 × 1,388.34
4. Step 4: Simplify right side
   2,436.30x = 4,667,779.56
5. Step 5: Solve for x
   x = 4,667,779.56/2,436.30
6. Step 6: Final answer
   x = 1,915.93