Finding the Fourth Proportional to 2,851.34, 4,279.05 and 1,208.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,851.34 : 4,279.05 = 1,208.34 : x
2. Step 2: Convert to fraction form
   2,851.34/4,279.05 = 1,208.34/x
3. Step 3: Cross multiply
   2,851.34x = 4,279.05 × 1,208.34
4. Step 4: Simplify right side
   2,851.34x = 5,170,547.28
5. Step 5: Solve for x
   x = 5,170,547.28/2,851.34
6. Step 6: Final answer
   x = 1,813.38