Finding the Fourth Proportional to 2,144.16, 3,213.36 and 1,591.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.16 : 3,213.36 = 1,591.98 : x
2. Step 2: Convert to fraction form
   2,144.16/3,213.36 = 1,591.98/x
3. Step 3: Cross multiply
   2,144.16x = 3,213.36 × 1,591.98
4. Step 4: Simplify right side
   2,144.16x = 5,115,604.85
5. Step 5: Solve for x
   x = 5,115,604.85/2,144.16
6. Step 6: Final answer
   x = 2,385.83