Finding the Fourth Proportional to 2,071.33, 3,106.97 and 838.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.33 : 3,106.97 = 838.41 : x
2. Step 2: Convert to fraction form
   2,071.33/3,106.97 = 838.41/x
3. Step 3: Cross multiply
   2,071.33x = 3,106.97 × 838.41
4. Step 4: Simplify right side
   2,071.33x = 2,604,914.72
5. Step 5: Solve for x
   x = 2,604,914.72/2,071.33
6. Step 6: Final answer
   x = 1,257.60