Finding the Fourth Proportional to 1,491.80, 2,241.72 and 798.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.80 : 2,241.72 = 798.96 : x
2. Step 2: Convert to fraction form
   1,491.80/2,241.72 = 798.96/x
3. Step 3: Cross multiply
   1,491.80x = 2,241.72 × 798.96
4. Step 4: Simplify right side
   1,491.80x = 1,791,044.61
5. Step 5: Solve for x
   x = 1,791,044.61/1,491.80
6. Step 6: Final answer
   x = 1,200.59