Finding the Fourth Proportional to 1,860.42, 2,568.57 and 1,660.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,860.42 : 2,568.57 = 1,660.91 : x
2. Step 2: Convert to fraction form
   1,860.42/2,568.57 = 1,660.91/x
3. Step 3: Cross multiply
   1,860.42x = 2,568.57 × 1,660.91
4. Step 4: Simplify right side
   1,860.42x = 4,266,150.76
5. Step 5: Solve for x
   x = 4,266,150.76/1,860.42
6. Step 6: Final answer
   x = 2,293.11