Finding the Fourth Proportional to 1,508.56, 2,081.78 and 845.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,508.56 : 2,081.78 = 845.46 : x
2. Step 2: Convert to fraction form
   1,508.56/2,081.78 = 845.46/x
3. Step 3: Cross multiply
   1,508.56x = 2,081.78 × 845.46
4. Step 4: Simplify right side
   1,508.56x = 1,760,047.08
5. Step 5: Solve for x
   x = 1,760,047.08/1,508.56
6. Step 6: Final answer
   x = 1,166.71