Finding the Fourth Proportional to 1,060.73, 1,463.60 and 687.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.73 : 1,463.60 = 687.67 : x
2. Step 2: Convert to fraction form
   1,060.73/1,463.60 = 687.67/x
3. Step 3: Cross multiply
   1,060.73x = 1,463.60 × 687.67
4. Step 4: Simplify right side
   1,060.73x = 1,006,480.10
5. Step 5: Solve for x
   x = 1,006,480.10/1,060.73
6. Step 6: Final answer
   x = 948.86