Finding the Fourth Proportional to 1,196.57, 1,651.70 and 1,072.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.57 : 1,651.70 = 1,072.01 : x
2. Step 2: Convert to fraction form
   1,196.57/1,651.70 = 1,072.01/x
3. Step 3: Cross multiply
   1,196.57x = 1,651.70 × 1,072.01
4. Step 4: Simplify right side
   1,196.57x = 1,770,645.73
5. Step 5: Solve for x
   x = 1,770,645.73/1,196.57
6. Step 6: Final answer
   x = 1,479.76