Finding the Fourth Proportional to 1,054.38, 1,581.57 and 560.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.38 : 1,581.57 = 560.82 : x
2. Step 2: Convert to fraction form
   1,054.38/1,581.57 = 560.82/x
3. Step 3: Cross multiply
   1,054.38x = 1,581.57 × 560.82
4. Step 4: Simplify right side
   1,054.38x = 886,976.09
5. Step 5: Solve for x
   x = 886,976.09/1,054.38
6. Step 6: Final answer
   x = 841.23