Finding the Fourth Proportional to 1,335.92, 1,842.98 and 811.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.92 : 1,842.98 = 811.04 : x
2. Step 2: Convert to fraction form
   1,335.92/1,842.98 = 811.04/x
3. Step 3: Cross multiply
   1,335.92x = 1,842.98 × 811.04
4. Step 4: Simplify right side
   1,335.92x = 1,494,730.50
5. Step 5: Solve for x
   x = 1,494,730.50/1,335.92
6. Step 6: Final answer
   x = 1,118.88