Finding the Fourth Proportional to 2,010.23, 3,015.82 and 839.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.23 : 3,015.82 = 839.58 : x
2. Step 2: Convert to fraction form
   2,010.23/3,015.82 = 839.58/x
3. Step 3: Cross multiply
   2,010.23x = 3,015.82 × 839.58
4. Step 4: Simplify right side
   2,010.23x = 2,532,002.88
5. Step 5: Solve for x
   x = 2,532,002.88/2,010.23
6. Step 6: Final answer
   x = 1,259.56