Finding the Fourth Proportional to 2,185.69, 3,281.82 and 1,880.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.69 : 3,281.82 = 1,880.86 : x
2. Step 2: Convert to fraction form
   2,185.69/3,281.82 = 1,880.86/x
3. Step 3: Cross multiply
   2,185.69x = 3,281.82 × 1,880.86
4. Step 4: Simplify right side
   2,185.69x = 6,172,643.97
5. Step 5: Solve for x
   x = 6,172,643.97/2,185.69
6. Step 6: Final answer
   x = 2,824.12