Finding the Fourth Proportional to 2,008.30, 3,012.96 and 838.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.30 : 3,012.96 = 838.09 : x
2. Step 2: Convert to fraction form
   2,008.30/3,012.96 = 838.09/x
3. Step 3: Cross multiply
   2,008.30x = 3,012.96 × 838.09
4. Step 4: Simplify right side
   2,008.30x = 2,525,131.65
5. Step 5: Solve for x
   x = 2,525,131.65/2,008.30
6. Step 6: Final answer
   x = 1,257.35