Finding the Fourth Proportional to 2,136.10, 3,201.15 and 1,698.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.10 : 3,201.15 = 1,698.10 : x
2. Step 2: Convert to fraction form
   2,136.10/3,201.15 = 1,698.10/x
3. Step 3: Cross multiply
   2,136.10x = 3,201.15 × 1,698.10
4. Step 4: Simplify right side
   2,136.10x = 5,435,872.82
5. Step 5: Solve for x
   x = 5,435,872.82/2,136.10
6. Step 6: Final answer
   x = 2,544.77