Finding the Fourth Proportional to 2,308.84, 3,179.72 and 2,160.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.84 : 3,179.72 = 2,160.61 : x
2. Step 2: Convert to fraction form
   2,308.84/3,179.72 = 2,160.61/x
3. Step 3: Cross multiply
   2,308.84x = 3,179.72 × 2,160.61
4. Step 4: Simplify right side
   2,308.84x = 6,870,132.28
5. Step 5: Solve for x
   x = 6,870,132.28/2,308.84
6. Step 6: Final answer
   x = 2,975.58