Finding the Fourth Proportional to 2,484.55, 3,724.51 and 839.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,484.55 : 3,724.51 = 839.95 : x
2. Step 2: Convert to fraction form
   2,484.55/3,724.51 = 839.95/x
3. Step 3: Cross multiply
   2,484.55x = 3,724.51 × 839.95
4. Step 4: Simplify right side
   2,484.55x = 3,128,404.27
5. Step 5: Solve for x
   x = 3,128,404.27/2,484.55
6. Step 6: Final answer
   x = 1,259.14