Finding the Fourth Proportional to 1,431.80, 1,976.84 and 1,034.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.80 : 1,976.84 = 1,034.15 : x
2. Step 2: Convert to fraction form
   1,431.80/1,976.84 = 1,034.15/x
3. Step 3: Cross multiply
   1,431.80x = 1,976.84 × 1,034.15
4. Step 4: Simplify right side
   1,431.80x = 2,044,361.73
5. Step 5: Solve for x
   x = 2,044,361.73/1,431.80
6. Step 6: Final answer
   x = 1,427.82