Finding the Fourth Proportional to 2,070.77, 2,857.58 and 1,185.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.77 : 2,857.58 = 1,185.95 : x
2. Step 2: Convert to fraction form
   2,070.77/2,857.58 = 1,185.95/x
3. Step 3: Cross multiply
   2,070.77x = 2,857.58 × 1,185.95
4. Step 4: Simplify right side
   2,070.77x = 3,388,947.00
5. Step 5: Solve for x
   x = 3,388,947.00/2,070.77
6. Step 6: Final answer
   x = 1,636.56