Finding the Fourth Proportional to 2,570.05, 3,853.88 and 926.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,570.05 : 3,853.88 = 926.38 : x
2. Step 2: Convert to fraction form
   2,570.05/3,853.88 = 926.38/x
3. Step 3: Cross multiply
   2,570.05x = 3,853.88 × 926.38
4. Step 4: Simplify right side
   2,570.05x = 3,570,157.54
5. Step 5: Solve for x
   x = 3,570,157.54/2,570.05
6. Step 6: Final answer
   x = 1,389.14