Finding the Fourth Proportional to 2,436.50, 3,362.37 and 1,389.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.50 : 3,362.37 = 1,389.17 : x
2. Step 2: Convert to fraction form
   2,436.50/3,362.37 = 1,389.17/x
3. Step 3: Cross multiply
   2,436.50x = 3,362.37 × 1,389.17
4. Step 4: Simplify right side
   2,436.50x = 4,670,903.53
5. Step 5: Solve for x
   x = 4,670,903.53/2,436.50
6. Step 6: Final answer
   x = 1,917.05