Finding the Fourth Proportional to 4,380.54, 6,573.69 and 2,070.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,380.54 : 6,573.69 = 2,070.78 : x
2. Step 2: Convert to fraction form
   4,380.54/6,573.69 = 2,070.78/x
3. Step 3: Cross multiply
   4,380.54x = 6,573.69 × 2,070.78
4. Step 4: Simplify right side
   4,380.54x = 13,612,665.78
5. Step 5: Solve for x
   x = 13,612,665.78/4,380.54
6. Step 6: Final answer
   x = 3,107.53