Finding the Fourth Proportional to 942.78, 1,300.94 and 549.82

Step by Step Solution

1. Step 1: Write the proportion equation
   942.78 : 1,300.94 = 549.82 : x
2. Step 2: Convert to fraction form
   942.78/1,300.94 = 549.82/x
3. Step 3: Cross multiply
   942.78x = 1,300.94 × 549.82
4. Step 4: Simplify right side
   942.78x = 715,282.83
5. Step 5: Solve for x
   x = 715,282.83/942.78
6. Step 6: Final answer
   x = 758.70