Finding the Fourth Proportional to 2,100.27, 3,151.80 and 801.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.27 : 3,151.80 = 801.69 : x
2. Step 2: Convert to fraction form
   2,100.27/3,151.80 = 801.69/x
3. Step 3: Cross multiply
   2,100.27x = 3,151.80 × 801.69
4. Step 4: Simplify right side
   2,100.27x = 2,526,766.54
5. Step 5: Solve for x
   x = 2,526,766.54/2,100.27
6. Step 6: Final answer
   x = 1,203.07