Finding the Fourth Proportional to 1,562.43, 2,155.78 and 1,065.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.43 : 2,155.78 = 1,065.34 : x
2. Step 2: Convert to fraction form
   1,562.43/2,155.78 = 1,065.34/x
3. Step 3: Cross multiply
   1,562.43x = 2,155.78 × 1,065.34
4. Step 4: Simplify right side
   1,562.43x = 2,296,638.67
5. Step 5: Solve for x
   x = 2,296,638.67/1,562.43
6. Step 6: Final answer
   x = 1,469.91