Finding the Fourth Proportional to 2,137.39, 2,949.57 and 1,205.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137.39 : 2,949.57 = 1,205.89 : x
2. Step 2: Convert to fraction form
   2,137.39/2,949.57 = 1,205.89/x
3. Step 3: Cross multiply
   2,137.39x = 2,949.57 × 1,205.89
4. Step 4: Simplify right side
   2,137.39x = 3,556,856.97
5. Step 5: Solve for x
   x = 3,556,856.97/2,137.39
6. Step 6: Final answer
   x = 1,664.11