Finding the Fourth Proportional to 2,570.35, 3,855.52 and 622.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,570.35 : 3,855.52 = 622.55 : x
2. Step 2: Convert to fraction form
   2,570.35/3,855.52 = 622.55/x
3. Step 3: Cross multiply
   2,570.35x = 3,855.52 × 622.55
4. Step 4: Simplify right side
   2,570.35x = 2,400,233.14
5. Step 5: Solve for x
   x = 2,400,233.14/2,570.35
6. Step 6: Final answer
   x = 933.82