Finding the Fourth Proportional to 2,557.71, 3,834.72 and 996.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557.71 : 3,834.72 = 996.39 : x
2. Step 2: Convert to fraction form
   2,557.71/3,834.72 = 996.39/x
3. Step 3: Cross multiply
   2,557.71x = 3,834.72 × 996.39
4. Step 4: Simplify right side
   2,557.71x = 3,820,876.66
5. Step 5: Solve for x
   x = 3,820,876.66/2,557.71
6. Step 6: Final answer
   x = 1,493.87