Finding the Fourth Proportional to 3,421.86, 5,128.05 and 1,568.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,421.86 : 5,128.05 = 1,568.34 : x
2. Step 2: Convert to fraction form
   3,421.86/5,128.05 = 1,568.34/x
3. Step 3: Cross multiply
   3,421.86x = 5,128.05 × 1,568.34
4. Step 4: Simplify right side
   3,421.86x = 8,042,525.94
5. Step 5: Solve for x
   x = 8,042,525.94/3,421.86
6. Step 6: Final answer
   x = 2,350.34