Finding the Fourth Proportional to 1,174.08, 1,609.72 and 1,153.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.08 : 1,609.72 = 1,153.42 : x
2. Step 2: Convert to fraction form
   1,174.08/1,609.72 = 1,153.42/x
3. Step 3: Cross multiply
   1,174.08x = 1,609.72 × 1,153.42
4. Step 4: Simplify right side
   1,174.08x = 1,856,683.24
5. Step 5: Solve for x
   x = 1,856,683.24/1,174.08
6. Step 6: Final answer
   x = 1,581.39