Finding the Fourth Proportional to 2,078.82, 3,116.60 and 1,038.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.82 : 3,116.60 = 1,038.29 : x
2. Step 2: Convert to fraction form
   2,078.82/3,116.60 = 1,038.29/x
3. Step 3: Cross multiply
   2,078.82x = 3,116.60 × 1,038.29
4. Step 4: Simplify right side
   2,078.82x = 3,235,913.84
5. Step 5: Solve for x
   x = 3,235,913.84/2,078.82
6. Step 6: Final answer
   x = 1,556.61