Finding the Fourth Proportional to 1,806.41, 2,706.78 and 1,396.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.41 : 2,706.78 = 1,396.55 : x
2. Step 2: Convert to fraction form
   1,806.41/2,706.78 = 1,396.55/x
3. Step 3: Cross multiply
   1,806.41x = 2,706.78 × 1,396.55
4. Step 4: Simplify right side
   1,806.41x = 3,780,153.61
5. Step 5: Solve for x
   x = 3,780,153.61/1,806.41
6. Step 6: Final answer
   x = 2,092.63