Finding the Fourth Proportional to 2,591.70, 3,883.23 and 1,820.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.70 : 3,883.23 = 1,820.82 : x
2. Step 2: Convert to fraction form
   2,591.70/3,883.23 = 1,820.82/x
3. Step 3: Cross multiply
   2,591.70x = 3,883.23 × 1,820.82
4. Step 4: Simplify right side
   2,591.70x = 7,070,662.85
5. Step 5: Solve for x
   x = 7,070,662.85/2,591.70
6. Step 6: Final answer
   x = 2,728.19