Finding the Fourth Proportional to 1,506.31, 2,078.72 and 843.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,506.31 : 2,078.72 = 843.19 : x
2. Step 2: Convert to fraction form
   1,506.31/2,078.72 = 843.19/x
3. Step 3: Cross multiply
   1,506.31x = 2,078.72 × 843.19
4. Step 4: Simplify right side
   1,506.31x = 1,752,755.92
5. Step 5: Solve for x
   x = 1,752,755.92/1,506.31
6. Step 6: Final answer
   x = 1,163.61