Finding the Fourth Proportional to 1,992.69, 2,749.86 and 1,153.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,992.69 : 2,749.86 = 1,153.28 : x
2. Step 2: Convert to fraction form
   1,992.69/2,749.86 = 1,153.28/x
3. Step 3: Cross multiply
   1,992.69x = 2,749.86 × 1,153.28
4. Step 4: Simplify right side
   1,992.69x = 3,171,358.54
5. Step 5: Solve for x
   x = 3,171,358.54/1,992.69
6. Step 6: Final answer
   x = 1,591.50