Finding the Fourth Proportional to 2,483.45, 3,725.21 and 839.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,483.45 : 3,725.21 = 839.99 : x
2. Step 2: Convert to fraction form
   2,483.45/3,725.21 = 839.99/x
3. Step 3: Cross multiply
   2,483.45x = 3,725.21 × 839.99
4. Step 4: Simplify right side
   2,483.45x = 3,129,139.15
5. Step 5: Solve for x
   x = 3,129,139.15/2,483.45
6. Step 6: Final answer
   x = 1,260.00