Finding the Fourth Proportional to 2,080.45, 2,870.79 and 1,196.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.45 : 2,870.79 = 1,196.38 : x
2. Step 2: Convert to fraction form
   2,080.45/2,870.79 = 1,196.38/x
3. Step 3: Cross multiply
   2,080.45x = 2,870.79 × 1,196.38
4. Step 4: Simplify right side
   2,080.45x = 3,434,541.39
5. Step 5: Solve for x
   x = 3,434,541.39/2,080.45
6. Step 6: Final answer
   x = 1,650.87