Finding the Fourth Proportional to 1,449.16, 1,997.46 and 1,186.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,449.16 : 1,997.46 = 1,186.72 : x
2. Step 2: Convert to fraction form
   1,449.16/1,997.46 = 1,186.72/x
3. Step 3: Cross multiply
   1,449.16x = 1,997.46 × 1,186.72
4. Step 4: Simplify right side
   1,449.16x = 2,370,425.73
5. Step 5: Solve for x
   x = 2,370,425.73/1,449.16
6. Step 6: Final answer
   x = 1,635.72