Finding the Fourth Proportional to 2,606.85, 3,910.85 and 1,436.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.85 : 3,910.85 = 1,436.25 : x
2. Step 2: Convert to fraction form
   2,606.85/3,910.85 = 1,436.25/x
3. Step 3: Cross multiply
   2,606.85x = 3,910.85 × 1,436.25
4. Step 4: Simplify right side
   2,606.85x = 5,616,934.53
5. Step 5: Solve for x
   x = 5,616,934.53/2,606.85
6. Step 6: Final answer
   x = 2,154.69