Finding the Fourth Proportional to 2,651, 3,978.56 and 1,008.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,651 : 3,978.56 = 1,008.70 : x
2. Step 2: Convert to fraction form
   2,651/3,978.56 = 1,008.70/x
3. Step 3: Cross multiply
   2,651x = 3,978.56 × 1,008.70
4. Step 4: Simplify right side
   2,651x = 4,013,173.47
5. Step 5: Solve for x
   x = 4,013,173.47/2,651
6. Step 6: Final answer
   x = 1,513.83