Finding the Fourth Proportional to 3,071.56, 4,238.77 and 1,674.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,071.56 : 4,238.77 = 1,674.31 : x
2. Step 2: Convert to fraction form
   3,071.56/4,238.77 = 1,674.31/x
3. Step 3: Cross multiply
   3,071.56x = 4,238.77 × 1,674.31
4. Step 4: Simplify right side
   3,071.56x = 7,097,015.00
5. Step 5: Solve for x
   x = 7,097,015.00/3,071.56
6. Step 6: Final answer
   x = 2,310.56