Finding the Fourth Proportional to 1,169.63, 1,613.89 and 672.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,169.63 : 1,613.89 = 672.29 : x
2. Step 2: Convert to fraction form
   1,169.63/1,613.89 = 672.29/x
3. Step 3: Cross multiply
   1,169.63x = 1,613.89 × 672.29
4. Step 4: Simplify right side
   1,169.63x = 1,085,002.11
5. Step 5: Solve for x
   x = 1,085,002.11/1,169.63
6. Step 6: Final answer
   x = 927.65