Finding the Fourth Proportional to 1,164.94, 1,607.38 and 667.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.94 : 1,607.38 = 667.73 : x
2. Step 2: Convert to fraction form
   1,164.94/1,607.38 = 667.73/x
3. Step 3: Cross multiply
   1,164.94x = 1,607.38 × 667.73
4. Step 4: Simplify right side
   1,164.94x = 1,073,298.20
5. Step 5: Solve for x
   x = 1,073,298.20/1,164.94
6. Step 6: Final answer
   x = 921.34