Finding the Fourth Proportional to 3,680.64, 5,520.69 and 1,340.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.64 : 5,520.69 = 1,340.55 : x
2. Step 2: Convert to fraction form
   3,680.64/5,520.69 = 1,340.55/x
3. Step 3: Cross multiply
   3,680.64x = 5,520.69 × 1,340.55
4. Step 4: Simplify right side
   3,680.64x = 7,400,760.98
5. Step 5: Solve for x
   x = 7,400,760.98/3,680.64
6. Step 6: Final answer
   x = 2,010.73