Finding the Fourth Proportional to 1,048.30, 1,446.69 and 606.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,048.30 : 1,446.69 = 606.21 : x
2. Step 2: Convert to fraction form
   1,048.30/1,446.69 = 606.21/x
3. Step 3: Cross multiply
   1,048.30x = 1,446.69 × 606.21
4. Step 4: Simplify right side
   1,048.30x = 876,997.94
5. Step 5: Solve for x
   x = 876,997.94/1,048.30
6. Step 6: Final answer
   x = 836.59