Finding the Fourth Proportional to 1,568.30, 2,353.96 and 838.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,568.30 : 2,353.96 = 838.38 : x
2. Step 2: Convert to fraction form
   1,568.30/2,353.96 = 838.38/x
3. Step 3: Cross multiply
   1,568.30x = 2,353.96 × 838.38
4. Step 4: Simplify right side
   1,568.30x = 1,973,522.86
5. Step 5: Solve for x
   x = 1,973,522.86/1,568.30
6. Step 6: Final answer
   x = 1,258.39