Finding the Fourth Proportional to 3,131.50, 4,697.97 and 1,079.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.50 : 4,697.97 = 1,079.50 : x
2. Step 2: Convert to fraction form
   3,131.50/4,697.97 = 1,079.50/x
3. Step 3: Cross multiply
   3,131.50x = 4,697.97 × 1,079.50
4. Step 4: Simplify right side
   3,131.50x = 5,071,458.62
5. Step 5: Solve for x
   x = 5,071,458.62/3,131.50
6. Step 6: Final answer
   x = 1,619.50