Finding the Fourth Proportional to 2,136.27, 2,947.89 and 1,252.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.27 : 2,947.89 = 1,252.21 : x
2. Step 2: Convert to fraction form
   2,136.27/2,947.89 = 1,252.21/x
3. Step 3: Cross multiply
   2,136.27x = 2,947.89 × 1,252.21
4. Step 4: Simplify right side
   2,136.27x = 3,691,380.19
5. Step 5: Solve for x
   x = 3,691,380.19/2,136.27
6. Step 6: Final answer
   x = 1,727.95