Finding the Fourth Proportional to 2,436.42, 3,362.31 and 1,388.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.42 : 3,362.31 = 1,388.46 : x
2. Step 2: Convert to fraction form
   2,436.42/3,362.31 = 1,388.46/x
3. Step 3: Cross multiply
   2,436.42x = 3,362.31 × 1,388.46
4. Step 4: Simplify right side
   2,436.42x = 4,668,432.94
5. Step 5: Solve for x
   x = 4,668,432.94/2,436.42
6. Step 6: Final answer
   x = 1,916.10