Finding the Fourth Proportional to 1,443.36, 2,159.55 and 953.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.36 : 2,159.55 = 953.76 : x
2. Step 2: Convert to fraction form
   1,443.36/2,159.55 = 953.76/x
3. Step 3: Cross multiply
   1,443.36x = 2,159.55 × 953.76
4. Step 4: Simplify right side
   1,443.36x = 2,059,692.41
5. Step 5: Solve for x
   x = 2,059,692.41/1,443.36
6. Step 6: Final answer
   x = 1,427.01