Finding the Fourth Proportional to 1,290.24, 1,779.98 and 792.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,290.24 : 1,779.98 = 792.69 : x
2. Step 2: Convert to fraction form
   1,290.24/1,779.98 = 792.69/x
3. Step 3: Cross multiply
   1,290.24x = 1,779.98 × 792.69
4. Step 4: Simplify right side
   1,290.24x = 1,410,968.38
5. Step 5: Solve for x
   x = 1,410,968.38/1,290.24
6. Step 6: Final answer
   x = 1,093.57