Finding the Fourth Proportional to 1,435.72, 2,154.30 and 705.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.72 : 2,154.30 = 705.96 : x
2. Step 2: Convert to fraction form
   1,435.72/2,154.30 = 705.96/x
3. Step 3: Cross multiply
   1,435.72x = 2,154.30 × 705.96
4. Step 4: Simplify right side
   1,435.72x = 1,520,849.63
5. Step 5: Solve for x
   x = 1,520,849.63/1,435.72
6. Step 6: Final answer
   x = 1,059.29