Finding the Fourth Proportional to 2,086.41, 3,130.23 and 1,208.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.41 : 3,130.23 = 1,208.70 : x
2. Step 2: Convert to fraction form
   2,086.41/3,130.23 = 1,208.70/x
3. Step 3: Cross multiply
   2,086.41x = 3,130.23 × 1,208.70
4. Step 4: Simplify right side
   2,086.41x = 3,783,525.27
5. Step 5: Solve for x
   x = 3,783,525.27/2,086.41
6. Step 6: Final answer
   x = 1,813.42