Finding the Fourth Proportional to 1,491.61, 2,241.07 and 1,408.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.61 : 2,241.07 = 1,408.72 : x
2. Step 2: Convert to fraction form
   1,491.61/2,241.07 = 1,408.72/x
3. Step 3: Cross multiply
   1,491.61x = 2,241.07 × 1,408.72
4. Step 4: Simplify right side
   1,491.61x = 3,157,033.09
5. Step 5: Solve for x
   x = 3,157,033.09/1,491.61
6. Step 6: Final answer
   x = 2,116.53