Finding the Fourth Proportional to 1,123.16, 1,682.82 and 949.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.16 : 1,682.82 = 949.64 : x
2. Step 2: Convert to fraction form
   1,123.16/1,682.82 = 949.64/x
3. Step 3: Cross multiply
   1,123.16x = 1,682.82 × 949.64
4. Step 4: Simplify right side
   1,123.16x = 1,598,073.18
5. Step 5: Solve for x
   x = 1,598,073.18/1,123.16
6. Step 6: Final answer
   x = 1,422.84