Finding the Fourth Proportional to 3,663.50, 5,056.04 and 2,070.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.50 : 5,056.04 = 2,070.78 : x
2. Step 2: Convert to fraction form
   3,663.50/5,056.04 = 2,070.78/x
3. Step 3: Cross multiply
   3,663.50x = 5,056.04 × 2,070.78
4. Step 4: Simplify right side
   3,663.50x = 10,469,949.52
5. Step 5: Solve for x
   x = 10,469,949.52/3,663.50
6. Step 6: Final answer
   x = 2,857.91