Finding the Fourth Proportional to 2,411.09, 3,327.10 and 1,389.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.09 : 3,327.10 = 1,389.08 : x
2. Step 2: Convert to fraction form
   2,411.09/3,327.10 = 1,389.08/x
3. Step 3: Cross multiply
   2,411.09x = 3,327.10 × 1,389.08
4. Step 4: Simplify right side
   2,411.09x = 4,621,608.07
5. Step 5: Solve for x
   x = 4,621,608.07/2,411.09
6. Step 6: Final answer
   x = 1,916.81