Finding the Fourth Proportional to 2,100.66, 3,144.25 and 1,396.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.66 : 3,144.25 = 1,396.25 : x
2. Step 2: Convert to fraction form
   2,100.66/3,144.25 = 1,396.25/x
3. Step 3: Cross multiply
   2,100.66x = 3,144.25 × 1,396.25
4. Step 4: Simplify right side
   2,100.66x = 4,390,136.36
5. Step 5: Solve for x
   x = 4,390,136.36/2,100.66
6. Step 6: Final answer
   x = 2,089.89