Finding the Fourth Proportional to 2,300.66, 3,451.50 and 839.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.66 : 3,451.50 = 839.81 : x
2. Step 2: Convert to fraction form
   2,300.66/3,451.50 = 839.81/x
3. Step 3: Cross multiply
   2,300.66x = 3,451.50 × 839.81
4. Step 4: Simplify right side
   2,300.66x = 2,898,604.22
5. Step 5: Solve for x
   x = 2,898,604.22/2,300.66
6. Step 6: Final answer
   x = 1,259.90