Finding the Fourth Proportional to 1,335.82, 1,842.96 and 811.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.82 : 1,842.96 = 811.94 : x
2. Step 2: Convert to fraction form
   1,335.82/1,842.96 = 811.94/x
3. Step 3: Cross multiply
   1,335.82x = 1,842.96 × 811.94
4. Step 4: Simplify right side
   1,335.82x = 1,496,372.94
5. Step 5: Solve for x
   x = 1,496,372.94/1,335.82
6. Step 6: Final answer
   x = 1,120.19