Finding the Fourth Proportional to 1,622.34, 2,240.82 and 1,436.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,622.34 : 2,240.82 = 1,436.40 : x
2. Step 2: Convert to fraction form
   1,622.34/2,240.82 = 1,436.40/x
3. Step 3: Cross multiply
   1,622.34x = 2,240.82 × 1,436.40
4. Step 4: Simplify right side
   1,622.34x = 3,218,713.85
5. Step 5: Solve for x
   x = 3,218,713.85/1,622.34
6. Step 6: Final answer
   x = 1,983.99