Finding the Fourth Proportional to 2,178.50, 3,261.67 and 1,354.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.50 : 3,261.67 = 1,354.73 : x
2. Step 2: Convert to fraction form
   2,178.50/3,261.67 = 1,354.73/x
3. Step 3: Cross multiply
   2,178.50x = 3,261.67 × 1,354.73
4. Step 4: Simplify right side
   2,178.50x = 4,418,662.50
5. Step 5: Solve for x
   x = 4,418,662.50/2,178.50
6. Step 6: Final answer
   x = 2,028.31