Finding the Fourth Proportional to 1,170.06, 1,614.12 and 672.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,170.06 : 1,614.12 = 672.72 : x
2. Step 2: Convert to fraction form
   1,170.06/1,614.12 = 672.72/x
3. Step 3: Cross multiply
   1,170.06x = 1,614.12 × 672.72
4. Step 4: Simplify right side
   1,170.06x = 1,085,850.81
5. Step 5: Solve for x
   x = 1,085,850.81/1,170.06
6. Step 6: Final answer
   x = 928.03