Finding the Fourth Proportional to 2,070.29, 2,857.04 and 1,186.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.29 : 2,857.04 = 1,186.10 : x
2. Step 2: Convert to fraction form
   2,070.29/2,857.04 = 1,186.10/x
3. Step 3: Cross multiply
   2,070.29x = 2,857.04 × 1,186.10
4. Step 4: Simplify right side
   2,070.29x = 3,388,735.14
5. Step 5: Solve for x
   x = 3,388,735.14/2,070.29
6. Step 6: Final answer
   x = 1,636.84