Finding the Fourth Proportional to 1,296.05, 1,788.80 and 799.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296.05 : 1,788.80 = 799.16 : x
2. Step 2: Convert to fraction form
   1,296.05/1,788.80 = 799.16/x
3. Step 3: Cross multiply
   1,296.05x = 1,788.80 × 799.16
4. Step 4: Simplify right side
   1,296.05x = 1,429,524.47
5. Step 5: Solve for x
   x = 1,429,524.47/1,296.05
6. Step 6: Final answer
   x = 1,102.99