Finding the Fourth Proportional to 2,571.31, 3,856.95 and 623.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,571.31 : 3,856.95 = 623.51 : x
2. Step 2: Convert to fraction form
   2,571.31/3,856.95 = 623.51/x
3. Step 3: Cross multiply
   2,571.31x = 3,856.95 × 623.51
4. Step 4: Simplify right side
   2,571.31x = 2,404,846.89
5. Step 5: Solve for x
   x = 2,404,846.89/2,571.31
6. Step 6: Final answer
   x = 935.26