Finding the Fourth Proportional to 2,069.79, 2,856.22 and 1,185.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.79 : 2,856.22 = 1,185.67 : x
2. Step 2: Convert to fraction form
   2,069.79/2,856.22 = 1,185.67/x
3. Step 3: Cross multiply
   2,069.79x = 2,856.22 × 1,185.67
4. Step 4: Simplify right side
   2,069.79x = 3,386,534.37
5. Step 5: Solve for x
   x = 3,386,534.37/2,069.79
6. Step 6: Final answer
   x = 1,636.17