Finding the Fourth Proportional to 1,400.97, 1,933.68 and 811.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.97 : 1,933.68 = 811.42 : x
2. Step 2: Convert to fraction form
   1,400.97/1,933.68 = 811.42/x
3. Step 3: Cross multiply
   1,400.97x = 1,933.68 × 811.42
4. Step 4: Simplify right side
   1,400.97x = 1,569,026.63
5. Step 5: Solve for x
   x = 1,569,026.63/1,400.97
6. Step 6: Final answer
   x = 1,119.96