Finding the Fourth Proportional to 1,860.82, 2,568.72 and 1,231.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,860.82 : 2,568.72 = 1,231.63 : x
2. Step 2: Convert to fraction form
   1,860.82/2,568.72 = 1,231.63/x
3. Step 3: Cross multiply
   1,860.82x = 2,568.72 × 1,231.63
4. Step 4: Simplify right side
   1,860.82x = 3,163,712.61
5. Step 5: Solve for x
   x = 3,163,712.61/1,860.82
6. Step 6: Final answer
   x = 1,700.17