Finding the Fourth Proportional to 942.72, 1,300.86 and 549.68

Step by Step Solution

1. Step 1: Write the proportion equation
   942.72 : 1,300.86 = 549.68 : x
2. Step 2: Convert to fraction form
   942.72/1,300.86 = 549.68/x
3. Step 3: Cross multiply
   942.72x = 1,300.86 × 549.68
4. Step 4: Simplify right side
   942.72x = 715,056.72
5. Step 5: Solve for x
   x = 715,056.72/942.72
6. Step 6: Final answer
   x = 758.50