Finding the Fourth Proportional to 2,136.69, 2,947.82 and 1,297.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.69 : 2,947.82 = 1,297.10 : x
2. Step 2: Convert to fraction form
   2,136.69/2,947.82 = 1,297.10/x
3. Step 3: Cross multiply
   2,136.69x = 2,947.82 × 1,297.10
4. Step 4: Simplify right side
   2,136.69x = 3,823,596.10
5. Step 5: Solve for x
   x = 3,823,596.10/2,136.69
6. Step 6: Final answer
   x = 1,789.50