Finding the Fourth Proportional to 1,418.40, 1,955.37 and 1,103.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.40 : 1,955.37 = 1,103.11 : x
2. Step 2: Convert to fraction form
   1,418.40/1,955.37 = 1,103.11/x
3. Step 3: Cross multiply
   1,418.40x = 1,955.37 × 1,103.11
4. Step 4: Simplify right side
   1,418.40x = 2,156,983.31
5. Step 5: Solve for x
   x = 2,156,983.31/1,418.40
6. Step 6: Final answer
   x = 1,520.72