Finding the Fourth Proportional to 1,333.53, 1,839.70 and 808.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.53 : 1,839.70 = 808.65 : x
2. Step 2: Convert to fraction form
   1,333.53/1,839.70 = 808.65/x
3. Step 3: Cross multiply
   1,333.53x = 1,839.70 × 808.65
4. Step 4: Simplify right side
   1,333.53x = 1,487,673.41
5. Step 5: Solve for x
   x = 1,487,673.41/1,333.53
6. Step 6: Final answer
   x = 1,115.59