Finding the Fourth Proportional to 2,136.89, 2,948.06 and 1,297.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.89 : 2,948.06 = 1,297.28 : x
2. Step 2: Convert to fraction form
   2,136.89/2,948.06 = 1,297.28/x
3. Step 3: Cross multiply
   2,136.89x = 2,948.06 × 1,297.28
4. Step 4: Simplify right side
   2,136.89x = 3,824,469.89
5. Step 5: Solve for x
   x = 3,824,469.89/2,136.89
6. Step 6: Final answer
   x = 1,789.73