Finding the Fourth Proportional to 1,063.72, 1,593.50 and 697.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,063.72 : 1,593.50 = 697.40 : x
2. Step 2: Convert to fraction form
   1,063.72/1,593.50 = 697.40/x
3. Step 3: Cross multiply
   1,063.72x = 1,593.50 × 697.40
4. Step 4: Simplify right side
   1,063.72x = 1,111,300.68
5. Step 5: Solve for x
   x = 1,111,300.68/1,063.72
6. Step 6: Final answer
   x = 1,044.73