Finding the Fourth Proportional to 1,059.49, 1,582.77 and 843.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.49 : 1,582.77 = 843.31 : x
2. Step 2: Convert to fraction form
   1,059.49/1,582.77 = 843.31/x
3. Step 3: Cross multiply
   1,059.49x = 1,582.77 × 843.31
4. Step 4: Simplify right side
   1,059.49x = 1,334,765.77
5. Step 5: Solve for x
   x = 1,334,765.77/1,059.49
6. Step 6: Final answer
   x = 1,259.82