Finding the Fourth Proportional to 2,300.65, 3,451.32 and 839.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.65 : 3,451.32 = 839.45 : x
2. Step 2: Convert to fraction form
   2,300.65/3,451.32 = 839.45/x
3. Step 3: Cross multiply
   2,300.65x = 3,451.32 × 839.45
4. Step 4: Simplify right side
   2,300.65x = 2,897,219.20
5. Step 5: Solve for x
   x = 2,897,219.20/2,300.65
6. Step 6: Final answer
   x = 1,259.31