Finding the Fourth Proportional to 2,136.75, 2,948.72 and 1,205.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.75 : 2,948.72 = 1,205.25 : x
2. Step 2: Convert to fraction form
   2,136.75/2,948.72 = 1,205.25/x
3. Step 3: Cross multiply
   2,136.75x = 2,948.72 × 1,205.25
4. Step 4: Simplify right side
   2,136.75x = 3,553,943.27
5. Step 5: Solve for x
   x = 3,553,943.27/2,136.75
6. Step 6: Final answer
   x = 1,663.25