Finding the Fourth Proportional to 1,436.46, 2,153.82 and 705.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.46 : 2,153.82 = 705.12 : x
2. Step 2: Convert to fraction form
   1,436.46/2,153.82 = 705.12/x
3. Step 3: Cross multiply
   1,436.46x = 2,153.82 × 705.12
4. Step 4: Simplify right side
   1,436.46x = 1,518,701.56
5. Step 5: Solve for x
   x = 1,518,701.56/1,436.46
6. Step 6: Final answer
   x = 1,057.25