Finding the Fourth Proportional to 1,169.57, 1,613.96 and 672.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,169.57 : 1,613.96 = 672.18 : x
2. Step 2: Convert to fraction form
   1,169.57/1,613.96 = 672.18/x
3. Step 3: Cross multiply
   1,169.57x = 1,613.96 × 672.18
4. Step 4: Simplify right side
   1,169.57x = 1,084,868.27
5. Step 5: Solve for x
   x = 1,084,868.27/1,169.57
6. Step 6: Final answer
   x = 927.58