Finding the Fourth Proportional to 3,155.61, 4,354.72 and 1,739.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,155.61 : 4,354.72 = 1,739.31 : x
2. Step 2: Convert to fraction form
   3,155.61/4,354.72 = 1,739.31/x
3. Step 3: Cross multiply
   3,155.61x = 4,354.72 × 1,739.31
4. Step 4: Simplify right side
   3,155.61x = 7,574,208.04
5. Step 5: Solve for x
   x = 7,574,208.04/3,155.61
6. Step 6: Final answer
   x = 2,400.24