Finding the Fourth Proportional to 1,662.54, 2,492.07 and 839.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.54 : 2,492.07 = 839.09 : x
2. Step 2: Convert to fraction form
   1,662.54/2,492.07 = 839.09/x
3. Step 3: Cross multiply
   1,662.54x = 2,492.07 × 839.09
4. Step 4: Simplify right side
   1,662.54x = 2,091,058.56
5. Step 5: Solve for x
   x = 2,091,058.56/1,662.54
6. Step 6: Final answer
   x = 1,257.75