Finding the Fourth Proportional to 2,093.78, 2,888.43 and 1,431.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,093.78 : 2,888.43 = 1,431.56 : x
2. Step 2: Convert to fraction form
   2,093.78/2,888.43 = 1,431.56/x
3. Step 3: Cross multiply
   2,093.78x = 2,888.43 × 1,431.56
4. Step 4: Simplify right side
   2,093.78x = 4,134,960.85
5. Step 5: Solve for x
   x = 4,134,960.85/2,093.78
6. Step 6: Final answer
   x = 1,974.88