Finding the Fourth Proportional to 3,571.96, 5,360.10 and 1,380.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,571.96 : 5,360.10 = 1,380.88 : x
2. Step 2: Convert to fraction form
   3,571.96/5,360.10 = 1,380.88/x
3. Step 3: Cross multiply
   3,571.96x = 5,360.10 × 1,380.88
4. Step 4: Simplify right side
   3,571.96x = 7,401,654.89
5. Step 5: Solve for x
   x = 7,401,654.89/3,571.96
6. Step 6: Final answer
   x = 2,072.16