Finding the Fourth Proportional to 2,136.88, 2,948.89 and 1,205.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.88 : 2,948.89 = 1,205.38 : x
2. Step 2: Convert to fraction form
   2,136.88/2,948.89 = 1,205.38/x
3. Step 3: Cross multiply
   2,136.88x = 2,948.89 × 1,205.38
4. Step 4: Simplify right side
   2,136.88x = 3,554,519.79
5. Step 5: Solve for x
   x = 3,554,519.79/2,136.88
6. Step 6: Final answer
   x = 1,663.42