Finding the Fourth Proportional to 2,071.41, 3,107.75 and 838.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.41 : 3,107.75 = 838.59 : x
2. Step 2: Convert to fraction form
   2,071.41/3,107.75 = 838.59/x
3. Step 3: Cross multiply
   2,071.41x = 3,107.75 × 838.59
4. Step 4: Simplify right side
   2,071.41x = 2,606,123.88
5. Step 5: Solve for x
   x = 2,606,123.88/2,071.41
6. Step 6: Final answer
   x = 1,258.14