Finding the Fourth Proportional to 2,293.67, 3,442.46 and 1,678.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,293.67 : 3,442.46 = 1,678.61 : x
2. Step 2: Convert to fraction form
   2,293.67/3,442.46 = 1,678.61/x
3. Step 3: Cross multiply
   2,293.67x = 3,442.46 × 1,678.61
4. Step 4: Simplify right side
   2,293.67x = 5,778,522.18
5. Step 5: Solve for x
   x = 5,778,522.18/2,293.67
6. Step 6: Final answer
   x = 2,519.34