Finding the Fourth Proportional to 2,571.59, 3,857.38 and 623.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,571.59 : 3,857.38 = 623.81 : x
2. Step 2: Convert to fraction form
   2,571.59/3,857.38 = 623.81/x
3. Step 3: Cross multiply
   2,571.59x = 3,857.38 × 623.81
4. Step 4: Simplify right side
   2,571.59x = 2,406,280.30
5. Step 5: Solve for x
   x = 2,406,280.30/2,571.59
6. Step 6: Final answer
   x = 935.72