Finding the Fourth Proportional to 1,150.15, 1,716.53 and 1,072.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.15 : 1,716.53 = 1,072.12 : x
2. Step 2: Convert to fraction form
   1,150.15/1,716.53 = 1,072.12/x
3. Step 3: Cross multiply
   1,150.15x = 1,716.53 × 1,072.12
4. Step 4: Simplify right side
   1,150.15x = 1,840,324.53
5. Step 5: Solve for x
   x = 1,840,324.53/1,150.15
6. Step 6: Final answer
   x = 1,600.08