Finding the Fourth Proportional to 2,008.64, 2,772.98 and 1,386.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.64 : 2,772.98 = 1,386.56 : x
2. Step 2: Convert to fraction form
   2,008.64/2,772.98 = 1,386.56/x
3. Step 3: Cross multiply
   2,008.64x = 2,772.98 × 1,386.56
4. Step 4: Simplify right side
   2,008.64x = 3,844,903.15
5. Step 5: Solve for x
   x = 3,844,903.15/2,008.64
6. Step 6: Final answer
   x = 1,914.18