Finding the Fourth Proportional to 1,065.39, 1,595.77 and 653.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.39 : 1,595.77 = 653.30 : x
2. Step 2: Convert to fraction form
   1,065.39/1,595.77 = 653.30/x
3. Step 3: Cross multiply
   1,065.39x = 1,595.77 × 653.30
4. Step 4: Simplify right side
   1,065.39x = 1,042,512.91
5. Step 5: Solve for x
   x = 1,042,512.91/1,065.39
6. Step 6: Final answer
   x = 978.53