Finding the Fourth Proportional to 1,047.86, 1,569.06 and 681.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.86 : 1,569.06 = 681.54 : x
2. Step 2: Convert to fraction form
   1,047.86/1,569.06 = 681.54/x
3. Step 3: Cross multiply
   1,047.86x = 1,569.06 × 681.54
4. Step 4: Simplify right side
   1,047.86x = 1,069,377.15
5. Step 5: Solve for x
   x = 1,069,377.15/1,047.86
6. Step 6: Final answer
   x = 1,020.53