Finding the Fourth Proportional to 1,060.83, 1,591.20 and 630.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.83 : 1,591.20 = 630.72 : x
2. Step 2: Convert to fraction form
   1,060.83/1,591.20 = 630.72/x
3. Step 3: Cross multiply
   1,060.83x = 1,591.20 × 630.72
4. Step 4: Simplify right side
   1,060.83x = 1,003,601.66
5. Step 5: Solve for x
   x = 1,003,601.66/1,060.83
6. Step 6: Final answer
   x = 946.05