Finding the Fourth Proportional to 2,389.83, 3,577.86 and 2,119.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.83 : 3,577.86 = 2,119.29 : x
2. Step 2: Convert to fraction form
   2,389.83/3,577.86 = 2,119.29/x
3. Step 3: Cross multiply
   2,389.83x = 3,577.86 × 2,119.29
4. Step 4: Simplify right side
   2,389.83x = 7,582,522.92
5. Step 5: Solve for x
   x = 7,582,522.92/2,389.83
6. Step 6: Final answer
   x = 3,172.83