Finding the Fourth Proportional to 3,116.37, 4,300.80 and 1,719.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,116.37 : 4,300.80 = 1,719.12 : x
2. Step 2: Convert to fraction form
   3,116.37/4,300.80 = 1,719.12/x
3. Step 3: Cross multiply
   3,116.37x = 4,300.80 × 1,719.12
4. Step 4: Simplify right side
   3,116.37x = 7,393,591.30
5. Step 5: Solve for x
   x = 7,393,591.30/3,116.37
6. Step 6: Final answer
   x = 2,372.50