Finding the Fourth Proportional to 1,404.97, 2,105.84 and 855.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.97 : 2,105.84 = 855.93 : x
2. Step 2: Convert to fraction form
   1,404.97/2,105.84 = 855.93/x
3. Step 3: Cross multiply
   1,404.97x = 2,105.84 × 855.93
4. Step 4: Simplify right side
   1,404.97x = 1,802,451.63
5. Step 5: Solve for x
   x = 1,802,451.63/1,404.97
6. Step 6: Final answer
   x = 1,282.92