Finding the Fourth Proportional to 2,291.72, 3,160.91 and 1,408.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.72 : 3,160.91 = 1,408.01 : x
2. Step 2: Convert to fraction form
   2,291.72/3,160.91 = 1,408.01/x
3. Step 3: Cross multiply
   2,291.72x = 3,160.91 × 1,408.01
4. Step 4: Simplify right side
   2,291.72x = 4,450,580.60
5. Step 5: Solve for x
   x = 4,450,580.60/2,291.72
6. Step 6: Final answer
   x = 1,942.03