Finding the Fourth Proportional to 2,103.75, 3,156.62 and 804.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.75 : 3,156.62 = 804.87 : x
2. Step 2: Convert to fraction form
   2,103.75/3,156.62 = 804.87/x
3. Step 3: Cross multiply
   2,103.75x = 3,156.62 × 804.87
4. Step 4: Simplify right side
   2,103.75x = 2,540,664.72
5. Step 5: Solve for x
   x = 2,540,664.72/2,103.75
6. Step 6: Final answer
   x = 1,207.68