Finding the Fourth Proportional to 1,169.45, 1,613.88 and 672.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,169.45 : 1,613.88 = 672.18 : x
2. Step 2: Convert to fraction form
   1,169.45/1,613.88 = 672.18/x
3. Step 3: Cross multiply
   1,169.45x = 1,613.88 × 672.18
4. Step 4: Simplify right side
   1,169.45x = 1,084,817.86
5. Step 5: Solve for x
   x = 1,084,817.86/1,169.45
6. Step 6: Final answer
   x = 927.63