Finding the Fourth Proportional to 2,436.96, 3,363.03 and 1,389.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.96 : 3,363.03 = 1,389.09 : x
2. Step 2: Convert to fraction form
   2,436.96/3,363.03 = 1,389.09/x
3. Step 3: Cross multiply
   2,436.96x = 3,363.03 × 1,389.09
4. Step 4: Simplify right side
   2,436.96x = 4,671,544.40
5. Step 5: Solve for x
   x = 4,671,544.40/2,436.96
6. Step 6: Final answer
   x = 1,916.96