Finding the Fourth Proportional to 5,446.80, 8,171.55 and 1,551.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,446.80 : 8,171.55 = 1,551.20 : x
2. Step 2: Convert to fraction form
   5,446.80/8,171.55 = 1,551.20/x
3. Step 3: Cross multiply
   5,446.80x = 8,171.55 × 1,551.20
4. Step 4: Simplify right side
   5,446.80x = 12,675,667.50
5. Step 5: Solve for x
   x = 12,675,667.50/5,446.80
6. Step 6: Final answer
   x = 2,327.18