Finding the Fourth Proportional to 942.72, 1,300.29 and 648.69

Step by Step Solution

1. Step 1: Write the proportion equation
   942.72 : 1,300.29 = 648.69 : x
2. Step 2: Convert to fraction form
   942.72/1,300.29 = 648.69/x
3. Step 3: Cross multiply
   942.72x = 1,300.29 × 648.69
4. Step 4: Simplify right side
   942.72x = 843,485.12
5. Step 5: Solve for x
   x = 843,485.12/942.72
6. Step 6: Final answer
   x = 894.74