Finding the Fourth Proportional to 3,080.60, 4,619.34 and 1,520.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,080.60 : 4,619.34 = 1,520.72 : x
2. Step 2: Convert to fraction form
   3,080.60/4,619.34 = 1,520.72/x
3. Step 3: Cross multiply
   3,080.60x = 4,619.34 × 1,520.72
4. Step 4: Simplify right side
   3,080.60x = 7,024,722.72
5. Step 5: Solve for x
   x = 7,024,722.72/3,080.60
6. Step 6: Final answer
   x = 2,280.31