Finding the Fourth Proportional to 2,010.38, 3,015.47 and 839.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.38 : 3,015.47 = 839.93 : x
2. Step 2: Convert to fraction form
   2,010.38/3,015.47 = 839.93/x
3. Step 3: Cross multiply
   2,010.38x = 3,015.47 × 839.93
4. Step 4: Simplify right side
   2,010.38x = 2,532,783.72
5. Step 5: Solve for x
   x = 2,532,783.72/2,010.38
6. Step 6: Final answer
   x = 1,259.85