Finding the Fourth Proportional to 1,434.85, 1,980.75 and 1,103.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.85 : 1,980.75 = 1,103.15 : x
2. Step 2: Convert to fraction form
   1,434.85/1,980.75 = 1,103.15/x
3. Step 3: Cross multiply
   1,434.85x = 1,980.75 × 1,103.15
4. Step 4: Simplify right side
   1,434.85x = 2,185,058.85
5. Step 5: Solve for x
   x = 2,185,058.85/1,434.85
6. Step 6: Final answer
   x = 1,522.85