Finding the Fourth Proportional to 2,478.76, 3,718.52 and 835.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.76 : 3,718.52 = 835.17 : x
2. Step 2: Convert to fraction form
   2,478.76/3,718.52 = 835.17/x
3. Step 3: Cross multiply
   2,478.76x = 3,718.52 × 835.17
4. Step 4: Simplify right side
   2,478.76x = 3,105,592.17
5. Step 5: Solve for x
   x = 3,105,592.17/2,478.76
6. Step 6: Final answer
   x = 1,252.88