Finding the Fourth Proportional to 3,758.72, 5,186.61 and 2,079.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,758.72 : 5,186.61 = 2,079.86 : x
2. Step 2: Convert to fraction form
   3,758.72/5,186.61 = 2,079.86/x
3. Step 3: Cross multiply
   3,758.72x = 5,186.61 × 2,079.86
4. Step 4: Simplify right side
   3,758.72x = 10,787,396.74
5. Step 5: Solve for x
   x = 10,787,396.74/3,758.72
6. Step 6: Final answer
   x = 2,869.97