Finding the Fourth Proportional to 2,991.30, 4,487.18 and 799.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,991.30 : 4,487.18 = 799.98 : x
2. Step 2: Convert to fraction form
   2,991.30/4,487.18 = 799.98/x
3. Step 3: Cross multiply
   2,991.30x = 4,487.18 × 799.98
4. Step 4: Simplify right side
   2,991.30x = 3,589,654.26
5. Step 5: Solve for x
   x = 3,589,654.26/2,991.30
6. Step 6: Final answer
   x = 1,200.03