Finding the Fourth Proportional to 2,069.39, 3,106.29 and 837.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.39 : 3,106.29 = 837.60 : x
2. Step 2: Convert to fraction form
   2,069.39/3,106.29 = 837.60/x
3. Step 3: Cross multiply
   2,069.39x = 3,106.29 × 837.60
4. Step 4: Simplify right side
   2,069.39x = 2,601,826.41
5. Step 5: Solve for x
   x = 2,601,826.41/2,069.39
6. Step 6: Final answer
   x = 1,257.29