Finding the Fourth Proportional to 2,185.10, 3,279 and 886.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.10 : 3,279 = 886.58 : x
2. Step 2: Convert to fraction form
   2,185.10/3,279 = 886.58/x
3. Step 3: Cross multiply
   2,185.10x = 3,279 × 886.58
4. Step 4: Simplify right side
   2,185.10x = 2,907,095.82
5. Step 5: Solve for x
   x = 2,907,095.82/2,185.10
6. Step 6: Final answer
   x = 1,330.42