Finding the Fourth Proportional to 2,186.72, 3,017.00 and 1,976.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.72 : 3,017.00 = 1,976.21 : x
2. Step 2: Convert to fraction form
   2,186.72/3,017.00 = 1,976.21/x
3. Step 3: Cross multiply
   2,186.72x = 3,017.00 × 1,976.21
4. Step 4: Simplify right side
   2,186.72x = 5,962,238.05
5. Step 5: Solve for x
   x = 5,962,238.05/2,186.72
6. Step 6: Final answer
   x = 2,726.57