Finding the Fourth Proportional to 1,062.34, 1,466.17 and 643.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,062.34 : 1,466.17 = 643.03 : x
2. Step 2: Convert to fraction form
   1,062.34/1,466.17 = 643.03/x
3. Step 3: Cross multiply
   1,062.34x = 1,466.17 × 643.03
4. Step 4: Simplify right side
   1,062.34x = 942,786.02
5. Step 5: Solve for x
   x = 942,786.02/1,062.34
6. Step 6: Final answer
   x = 887.46