Finding the Fourth Proportional to 1,329.59, 1,834.56 and 805.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,329.59 : 1,834.56 = 805.31 : x
2. Step 2: Convert to fraction form
   1,329.59/1,834.56 = 805.31/x
3. Step 3: Cross multiply
   1,329.59x = 1,834.56 × 805.31
4. Step 4: Simplify right side
   1,329.59x = 1,477,394.10
5. Step 5: Solve for x
   x = 1,477,394.10/1,329.59
6. Step 6: Final answer
   x = 1,111.17