Finding the Fourth Proportional to 3,550.79, 5,321.55 and 1,905.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,550.79 : 5,321.55 = 1,905.41 : x
2. Step 2: Convert to fraction form
   3,550.79/5,321.55 = 1,905.41/x
3. Step 3: Cross multiply
   3,550.79x = 5,321.55 × 1,905.41
4. Step 4: Simplify right side
   3,550.79x = 10,139,714.38
5. Step 5: Solve for x
   x = 10,139,714.38/3,550.79
6. Step 6: Final answer
   x = 2,855.62