Finding the Fourth Proportional to 2,378.48, 3,567.71 and 647.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,378.48 : 3,567.71 = 647.10 : x
2. Step 2: Convert to fraction form
   2,378.48/3,567.71 = 647.10/x
3. Step 3: Cross multiply
   2,378.48x = 3,567.71 × 647.10
4. Step 4: Simplify right side
   2,378.48x = 2,308,665.14
5. Step 5: Solve for x
   x = 2,308,665.14/2,378.48
6. Step 6: Final answer
   x = 970.65