Finding the Fourth Proportional to 5,404.86, 8,106.87 and 1,707.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,404.86 : 8,106.87 = 1,707.20 : x
2. Step 2: Convert to fraction form
   5,404.86/8,106.87 = 1,707.20/x
3. Step 3: Cross multiply
   5,404.86x = 8,106.87 × 1,707.20
4. Step 4: Simplify right side
   5,404.86x = 13,840,048.46
5. Step 5: Solve for x
   x = 13,840,048.46/5,404.86
6. Step 6: Final answer
   x = 2,560.67