Finding the Fourth Proportional to 1,682.87, 2,321.55 and 1,185.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,682.87 : 2,321.55 = 1,185.79 : x
2. Step 2: Convert to fraction form
   1,682.87/2,321.55 = 1,185.79/x
3. Step 3: Cross multiply
   1,682.87x = 2,321.55 × 1,185.79
4. Step 4: Simplify right side
   1,682.87x = 2,752,870.77
5. Step 5: Solve for x
   x = 2,752,870.77/1,682.87
6. Step 6: Final answer
   x = 1,635.82