Finding the Fourth Proportional to 1,164.93, 1,607.58 and 667.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.93 : 1,607.58 = 667.56 : x
2. Step 2: Convert to fraction form
   1,164.93/1,607.58 = 667.56/x
3. Step 3: Cross multiply
   1,164.93x = 1,607.58 × 667.56
4. Step 4: Simplify right side
   1,164.93x = 1,073,156.10
5. Step 5: Solve for x
   x = 1,073,156.10/1,164.93
6. Step 6: Final answer
   x = 921.22