Finding the Fourth Proportional to 1,164.05, 1,608.59 and 883.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.05 : 1,608.59 = 883.79 : x
2. Step 2: Convert to fraction form
   1,164.05/1,608.59 = 883.79/x
3. Step 3: Cross multiply
   1,164.05x = 1,608.59 × 883.79
4. Step 4: Simplify right side
   1,164.05x = 1,421,643.29
5. Step 5: Solve for x
   x = 1,421,643.29/1,164.05
6. Step 6: Final answer
   x = 1,221.30