Finding the Fourth Proportional to 1,061.81, 1,592.72 and 446.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.81 : 1,592.72 = 446.21 : x
2. Step 2: Convert to fraction form
   1,061.81/1,592.72 = 446.21/x
3. Step 3: Cross multiply
   1,061.81x = 1,592.72 × 446.21
4. Step 4: Simplify right side
   1,061.81x = 710,687.59
5. Step 5: Solve for x
   x = 710,687.59/1,061.81
6. Step 6: Final answer
   x = 669.32