Finding the Fourth Proportional to 1,410.40, 2,112.91 and 792.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.40 : 2,112.91 = 792.23 : x
2. Step 2: Convert to fraction form
   1,410.40/2,112.91 = 792.23/x
3. Step 3: Cross multiply
   1,410.40x = 2,112.91 × 792.23
4. Step 4: Simplify right side
   1,410.40x = 1,673,910.69
5. Step 5: Solve for x
   x = 1,673,910.69/1,410.40
6. Step 6: Final answer
   x = 1,186.83