Finding the Fourth Proportional to 1,069.34, 1,475.78 and 649.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.34 : 1,475.78 = 649.59 : x
2. Step 2: Convert to fraction form
   1,069.34/1,475.78 = 649.59/x
3. Step 3: Cross multiply
   1,069.34x = 1,475.78 × 649.59
4. Step 4: Simplify right side
   1,069.34x = 958,648.68
5. Step 5: Solve for x
   x = 958,648.68/1,069.34
6. Step 6: Final answer
   x = 896.49