Finding the Fourth Proportional to 2,136.82, 2,947.98 and 1,338.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.82 : 2,947.98 = 1,338.75 : x
2. Step 2: Convert to fraction form
   2,136.82/2,947.98 = 1,338.75/x
3. Step 3: Cross multiply
   2,136.82x = 2,947.98 × 1,338.75
4. Step 4: Simplify right side
   2,136.82x = 3,946,608.23
5. Step 5: Solve for x
   x = 3,946,608.23/2,136.82
6. Step 6: Final answer
   x = 1,846.96