Finding the Fourth Proportional to 1,508.45, 2,081.79 and 845.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,508.45 : 2,081.79 = 845.43 : x
2. Step 2: Convert to fraction form
   1,508.45/2,081.79 = 845.43/x
3. Step 3: Cross multiply
   1,508.45x = 2,081.79 × 845.43
4. Step 4: Simplify right side
   1,508.45x = 1,760,007.72
5. Step 5: Solve for x
   x = 1,760,007.72/1,508.45
6. Step 6: Final answer
   x = 1,166.77