Finding the Fourth Proportional to 1,892.89, 2,840.82 and 1,431.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,892.89 : 2,840.82 = 1,431.87 : x
2. Step 2: Convert to fraction form
   1,892.89/2,840.82 = 1,431.87/x
3. Step 3: Cross multiply
   1,892.89x = 2,840.82 × 1,431.87
4. Step 4: Simplify right side
   1,892.89x = 4,067,684.93
5. Step 5: Solve for x
   x = 4,067,684.93/1,892.89
6. Step 6: Final answer
   x = 2,148.93