Finding the Fourth Proportional to 2,729.16, 4,089.62 and 1,266.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,729.16 : 4,089.62 = 1,266.60 : x
2. Step 2: Convert to fraction form
   2,729.16/4,089.62 = 1,266.60/x
3. Step 3: Cross multiply
   2,729.16x = 4,089.62 × 1,266.60
4. Step 4: Simplify right side
   2,729.16x = 5,179,912.69
5. Step 5: Solve for x
   x = 5,179,912.69/2,729.16
6. Step 6: Final answer
   x = 1,897.99