Finding the Fourth Proportional to 2,570.24, 3,854.35 and 926.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,570.24 : 3,854.35 = 926.21 : x
2. Step 2: Convert to fraction form
   2,570.24/3,854.35 = 926.21/x
3. Step 3: Cross multiply
   2,570.24x = 3,854.35 × 926.21
4. Step 4: Simplify right side
   2,570.24x = 3,569,937.51
5. Step 5: Solve for x
   x = 3,569,937.51/2,570.24
6. Step 6: Final answer
   x = 1,388.95