Finding the Fourth Proportional to 1,023.42, 1,411.38 and 673.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,023.42 : 1,411.38 = 673.50 : x
2. Step 2: Convert to fraction form
   1,023.42/1,411.38 = 673.50/x
3. Step 3: Cross multiply
   1,023.42x = 1,411.38 × 673.50
4. Step 4: Simplify right side
   1,023.42x = 950,564.43
5. Step 5: Solve for x
   x = 950,564.43/1,023.42
6. Step 6: Final answer
   x = 928.81