Finding the Fourth Proportional to 2,436.82, 3,362.88 and 1,388.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.82 : 3,362.88 = 1,388.95 : x
2. Step 2: Convert to fraction form
   2,436.82/3,362.88 = 1,388.95/x
3. Step 3: Cross multiply
   2,436.82x = 3,362.88 × 1,388.95
4. Step 4: Simplify right side
   2,436.82x = 4,670,868.98
5. Step 5: Solve for x
   x = 4,670,868.98/2,436.82
6. Step 6: Final answer
   x = 1,916.79