Finding the Fourth Proportional to 1,381.81, 1,906.92 and 792.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.81 : 1,906.92 = 792.55 : x
2. Step 2: Convert to fraction form
   1,381.81/1,906.92 = 792.55/x
3. Step 3: Cross multiply
   1,381.81x = 1,906.92 × 792.55
4. Step 4: Simplify right side
   1,381.81x = 1,511,329.45
5. Step 5: Solve for x
   x = 1,511,329.45/1,381.81
6. Step 6: Final answer
   x = 1,093.73