Finding the Fourth Proportional to 5,402.72, 8,104.46 and 1,705.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,402.72 : 8,104.46 = 1,705.12 : x
2. Step 2: Convert to fraction form
   5,402.72/8,104.46 = 1,705.12/x
3. Step 3: Cross multiply
   5,402.72x = 8,104.46 × 1,705.12
4. Step 4: Simplify right side
   5,402.72x = 13,819,076.84
5. Step 5: Solve for x
   x = 13,819,076.84/5,402.72
6. Step 6: Final answer
   x = 2,557.80