Finding the Fourth Proportional to 1,288.82, 1,779.50 and 792.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288.82 : 1,779.50 = 792.14 : x
2. Step 2: Convert to fraction form
   1,288.82/1,779.50 = 792.14/x
3. Step 3: Cross multiply
   1,288.82x = 1,779.50 × 792.14
4. Step 4: Simplify right side
   1,288.82x = 1,409,606.21
5. Step 5: Solve for x
   x = 1,409,606.21/1,288.82
6. Step 6: Final answer
   x = 1,093.72