Finding the Fourth Proportional to 1,060.35, 1,588.91 and 443.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.35 : 1,588.91 = 443.72 : x
2. Step 2: Convert to fraction form
   1,060.35/1,588.91 = 443.72/x
3. Step 3: Cross multiply
   1,060.35x = 1,588.91 × 443.72
4. Step 4: Simplify right side
   1,060.35x = 705,032.56
5. Step 5: Solve for x
   x = 705,032.56/1,060.35
6. Step 6: Final answer
   x = 664.90