Finding the Fourth Proportional to 1,976.82, 2,728.13 and 1,190.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.82 : 2,728.13 = 1,190.99 : x
2. Step 2: Convert to fraction form
   1,976.82/2,728.13 = 1,190.99/x
3. Step 3: Cross multiply
   1,976.82x = 2,728.13 × 1,190.99
4. Step 4: Simplify right side
   1,976.82x = 3,249,155.95
5. Step 5: Solve for x
   x = 3,249,155.95/1,976.82
6. Step 6: Final answer
   x = 1,643.63