Finding the Fourth Proportional to 2,136.88, 2,948.81 and 1,192.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.88 : 2,948.81 = 1,192.72 : x
2. Step 2: Convert to fraction form
   2,136.88/2,948.81 = 1,192.72/x
3. Step 3: Cross multiply
   2,136.88x = 2,948.81 × 1,192.72
4. Step 4: Simplify right side
   2,136.88x = 3,517,104.66
5. Step 5: Solve for x
   x = 3,517,104.66/2,136.88
6. Step 6: Final answer
   x = 1,645.91