Finding the Fourth Proportional to 3,639.59, 5,460.18 and 2,080.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,639.59 : 5,460.18 = 2,080.34 : x
2. Step 2: Convert to fraction form
   3,639.59/5,460.18 = 2,080.34/x
3. Step 3: Cross multiply
   3,639.59x = 5,460.18 × 2,080.34
4. Step 4: Simplify right side
   3,639.59x = 11,359,030.86
5. Step 5: Solve for x
   x = 11,359,030.86/3,639.59
6. Step 6: Final answer
   x = 3,120.96