Finding the Fourth Proportional to 2,071.58, 3,107.57 and 839.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.58 : 3,107.57 = 839.03 : x
2. Step 2: Convert to fraction form
   2,071.58/3,107.57 = 839.03/x
3. Step 3: Cross multiply
   2,071.58x = 3,107.57 × 839.03
4. Step 4: Simplify right side
   2,071.58x = 2,607,324.72
5. Step 5: Solve for x
   x = 2,607,324.72/2,071.58
6. Step 6: Final answer
   x = 1,258.62