Finding the Fourth Proportional to 2,518.25, 3,474.06 and 1,678.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.25 : 3,474.06 = 1,678.13 : x
2. Step 2: Convert to fraction form
   2,518.25/3,474.06 = 1,678.13/x
3. Step 3: Cross multiply
   2,518.25x = 3,474.06 × 1,678.13
4. Step 4: Simplify right side
   2,518.25x = 5,829,928.50
5. Step 5: Solve for x
   x = 5,829,928.50/2,518.25
6. Step 6: Final answer
   x = 2,315.08