Finding the Fourth Proportional to 2,057.09, 3,084.84 and 670.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.09 : 3,084.84 = 670.10 : x
2. Step 2: Convert to fraction form
   2,057.09/3,084.84 = 670.10/x
3. Step 3: Cross multiply
   2,057.09x = 3,084.84 × 670.10
4. Step 4: Simplify right side
   2,057.09x = 2,067,135.86
5. Step 5: Solve for x
   x = 2,067,135.86/2,057.09
6. Step 6: Final answer
   x = 1,004.89