Finding the Fourth Proportional to 2,670.31, 4,003.98 and 1,282.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,670.31 : 4,003.98 = 1,282.51 : x
2. Step 2: Convert to fraction form
   2,670.31/4,003.98 = 1,282.51/x
3. Step 3: Cross multiply
   2,670.31x = 4,003.98 × 1,282.51
4. Step 4: Simplify right side
   2,670.31x = 5,135,144.39
5. Step 5: Solve for x
   x = 5,135,144.39/2,670.31
6. Step 6: Final answer
   x = 1,923.05