Finding the Fourth Proportional to 3,650.48, 5,478.05 and 1,310.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,650.48 : 5,478.05 = 1,310.43 : x
2. Step 2: Convert to fraction form
   3,650.48/5,478.05 = 1,310.43/x
3. Step 3: Cross multiply
   3,650.48x = 5,478.05 × 1,310.43
4. Step 4: Simplify right side
   3,650.48x = 7,178,624.88
5. Step 5: Solve for x
   x = 7,178,624.88/3,650.48
6. Step 6: Final answer
   x = 1,966.49