Finding the Fourth Proportional to 1,434.92, 1,976.82 and 1,171.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.92 : 1,976.82 = 1,171.40 : x
2. Step 2: Convert to fraction form
   1,434.92/1,976.82 = 1,171.40/x
3. Step 3: Cross multiply
   1,434.92x = 1,976.82 × 1,171.40
4. Step 4: Simplify right side
   1,434.92x = 2,315,646.95
5. Step 5: Solve for x
   x = 2,315,646.95/1,434.92
6. Step 6: Final answer
   x = 1,613.78