Finding the Fourth Proportional to 2,570.31, 3,855.46 and 622.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,570.31 : 3,855.46 = 622.51 : x
2. Step 2: Convert to fraction form
   2,570.31/3,855.46 = 622.51/x
3. Step 3: Cross multiply
   2,570.31x = 3,855.46 × 622.51
4. Step 4: Simplify right side
   2,570.31x = 2,400,059.29
5. Step 5: Solve for x
   x = 2,400,059.29/2,570.31
6. Step 6: Final answer
   x = 933.76