Finding the Fourth Proportional to 2,342.58, 3,228.31 and 1,678.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,342.58 : 3,228.31 = 1,678.27 : x
2. Step 2: Convert to fraction form
   2,342.58/3,228.31 = 1,678.27/x
3. Step 3: Cross multiply
   2,342.58x = 3,228.31 × 1,678.27
4. Step 4: Simplify right side
   2,342.58x = 5,417,975.82
5. Step 5: Solve for x
   x = 5,417,975.82/2,342.58
6. Step 6: Final answer
   x = 2,312.82