Finding the Fourth Proportional to 2,271.42, 3,408.12 and 1,038.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.42 : 3,408.12 = 1,038.96 : x
2. Step 2: Convert to fraction form
   2,271.42/3,408.12 = 1,038.96/x
3. Step 3: Cross multiply
   2,271.42x = 3,408.12 × 1,038.96
4. Step 4: Simplify right side
   2,271.42x = 3,540,900.36
5. Step 5: Solve for x
   x = 3,540,900.36/2,271.42
6. Step 6: Final answer
   x = 1,558.89