Finding the Fourth Proportional to 2,104.06, 3,156.69 and 805.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.06 : 3,156.69 = 805.63 : x
2. Step 2: Convert to fraction form
   2,104.06/3,156.69 = 805.63/x
3. Step 3: Cross multiply
   2,104.06x = 3,156.69 × 805.63
4. Step 4: Simplify right side
   2,104.06x = 2,543,124.16
5. Step 5: Solve for x
   x = 2,543,124.16/2,104.06
6. Step 6: Final answer
   x = 1,208.67