Finding the Fourth Proportional to 3,478.53, 5,211.15 and 2,069.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,478.53 : 5,211.15 = 2,069.94 : x
2. Step 2: Convert to fraction form
   3,478.53/5,211.15 = 2,069.94/x
3. Step 3: Cross multiply
   3,478.53x = 5,211.15 × 2,069.94
4. Step 4: Simplify right side
   3,478.53x = 10,786,767.83
5. Step 5: Solve for x
   x = 10,786,767.83/3,478.53
6. Step 6: Final answer
   x = 3,100.96