Finding the Fourth Proportional to 2,669.31, 4,002.48 and 1,281.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,669.31 : 4,002.48 = 1,281.51 : x
2. Step 2: Convert to fraction form
   2,669.31/4,002.48 = 1,281.51/x
3. Step 3: Cross multiply
   2,669.31x = 4,002.48 × 1,281.51
4. Step 4: Simplify right side
   2,669.31x = 5,129,218.14
5. Step 5: Solve for x
   x = 5,129,218.14/2,669.31
6. Step 6: Final answer
   x = 1,921.55