Finding the Fourth Proportional to 2,069.83, 2,856.57 and 1,185.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.83 : 2,856.57 = 1,185.91 : x
2. Step 2: Convert to fraction form
   2,069.83/2,856.57 = 1,185.91/x
3. Step 3: Cross multiply
   2,069.83x = 2,856.57 × 1,185.91
4. Step 4: Simplify right side
   2,069.83x = 3,387,634.93
5. Step 5: Solve for x
   x = 3,387,634.93/2,069.83
6. Step 6: Final answer
   x = 1,636.67