Finding the Fourth Proportional to 941.76, 1,408.86 and 667.98

Step by Step Solution

1. Step 1: Write the proportion equation
   941.76 : 1,408.86 = 667.98 : x
2. Step 2: Convert to fraction form
   941.76/1,408.86 = 667.98/x
3. Step 3: Cross multiply
   941.76x = 1,408.86 × 667.98
4. Step 4: Simplify right side
   941.76x = 941,090.30
5. Step 5: Solve for x
   x = 941,090.30/941.76
6. Step 6: Final answer
   x = 999.29