Finding the Fourth Proportional to 1,333.76, 1,840.56 and 809.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.76 : 1,840.56 = 809.84 : x
2. Step 2: Convert to fraction form
   1,333.76/1,840.56 = 809.84/x
3. Step 3: Cross multiply
   1,333.76x = 1,840.56 × 809.84
4. Step 4: Simplify right side
   1,333.76x = 1,490,559.11
5. Step 5: Solve for x
   x = 1,490,559.11/1,333.76
6. Step 6: Final answer
   x = 1,117.56