Finding the Fourth Proportional to 2,136.23, 2,946.78 and 1,348.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.23 : 2,946.78 = 1,348.91 : x
2. Step 2: Convert to fraction form
   2,136.23/2,946.78 = 1,348.91/x
3. Step 3: Cross multiply
   2,136.23x = 2,946.78 × 1,348.91
4. Step 4: Simplify right side
   2,136.23x = 3,974,926.28
5. Step 5: Solve for x
   x = 3,974,926.28/2,136.23
6. Step 6: Final answer
   x = 1,860.72