Finding the Fourth Proportional to 1,382.56, 1,908.16 and 793.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.56 : 1,908.16 = 793.12 : x
2. Step 2: Convert to fraction form
   1,382.56/1,908.16 = 793.12/x
3. Step 3: Cross multiply
   1,382.56x = 1,908.16 × 793.12
4. Step 4: Simplify right side
   1,382.56x = 1,513,399.86
5. Step 5: Solve for x
   x = 1,513,399.86/1,382.56
6. Step 6: Final answer
   x = 1,094.64