Finding the Fourth Proportional to 2,640.59, 3,642.32 and 2,080.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.59 : 3,642.32 = 2,080.88 : x
2. Step 2: Convert to fraction form
   2,640.59/3,642.32 = 2,080.88/x
3. Step 3: Cross multiply
   2,640.59x = 3,642.32 × 2,080.88
4. Step 4: Simplify right side
   2,640.59x = 7,579,202.23
5. Step 5: Solve for x
   x = 7,579,202.23/2,640.59
6. Step 6: Final answer
   x = 2,870.27