Finding the Fourth Proportional to 2,483.13, 3,724.47 and 839.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,483.13 : 3,724.47 = 839.69 : x
2. Step 2: Convert to fraction form
   2,483.13/3,724.47 = 839.69/x
3. Step 3: Cross multiply
   2,483.13x = 3,724.47 × 839.69
4. Step 4: Simplify right side
   2,483.13x = 3,127,404.85
5. Step 5: Solve for x
   x = 3,127,404.85/2,483.13
6. Step 6: Final answer
   x = 1,259.46