Finding the Fourth Proportional to 1,434.57, 1,977.12 and 1,040.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.57 : 1,977.12 = 1,040.91 : x
2. Step 2: Convert to fraction form
   1,434.57/1,977.12 = 1,040.91/x
3. Step 3: Cross multiply
   1,434.57x = 1,977.12 × 1,040.91
4. Step 4: Simplify right side
   1,434.57x = 2,058,003.98
5. Step 5: Solve for x
   x = 2,058,003.98/1,434.57
6. Step 6: Final answer
   x = 1,434.58