Finding the Fourth Proportional to 2,371.50, 3,554.36 and 1,678.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,371.50 : 3,554.36 = 1,678.37 : x
2. Step 2: Convert to fraction form
   2,371.50/3,554.36 = 1,678.37/x
3. Step 3: Cross multiply
   2,371.50x = 3,554.36 × 1,678.37
4. Step 4: Simplify right side
   2,371.50x = 5,965,526.50
5. Step 5: Solve for x
   x = 5,965,526.50/2,371.50
6. Step 6: Final answer
   x = 2,515.51