Finding the Fourth Proportional to 2,300.79, 3,448.09 and 838.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.79 : 3,448.09 = 838.56 : x
2. Step 2: Convert to fraction form
   2,300.79/3,448.09 = 838.56/x
3. Step 3: Cross multiply
   2,300.79x = 3,448.09 × 838.56
4. Step 4: Simplify right side
   2,300.79x = 2,891,430.35
5. Step 5: Solve for x
   x = 2,891,430.35/2,300.79
6. Step 6: Final answer
   x = 1,256.71