Finding the Fourth Proportional to 1,667.39, 2,499.26 and 799.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.39 : 2,499.26 = 799.88 : x
2. Step 2: Convert to fraction form
   1,667.39/2,499.26 = 799.88/x
3. Step 3: Cross multiply
   1,667.39x = 2,499.26 × 799.88
4. Step 4: Simplify right side
   1,667.39x = 1,999,091.59
5. Step 5: Solve for x
   x = 1,999,091.59/1,667.39
6. Step 6: Final answer
   x = 1,198.94