Finding the Fourth Proportional to 3,758.79, 5,187.20 and 2,080.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,758.79 : 5,187.20 = 2,080.34 : x
2. Step 2: Convert to fraction form
   3,758.79/5,187.20 = 2,080.34/x
3. Step 3: Cross multiply
   3,758.79x = 5,187.20 × 2,080.34
4. Step 4: Simplify right side
   3,758.79x = 10,791,103.31
5. Step 5: Solve for x
   x = 10,791,103.31/3,758.79
6. Step 6: Final answer
   x = 2,870.90