Finding the Fourth Proportional to 2,478.57, 3,718.23 and 834.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.57 : 3,718.23 = 834.98 : x
2. Step 2: Convert to fraction form
   2,478.57/3,718.23 = 834.98/x
3. Step 3: Cross multiply
   2,478.57x = 3,718.23 × 834.98
4. Step 4: Simplify right side
   2,478.57x = 3,104,647.69
5. Step 5: Solve for x
   x = 3,104,647.69/2,478.57
6. Step 6: Final answer
   x = 1,252.60