Finding the Fourth Proportional to 1,313.34, 1,968.72 and 435.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,313.34 : 1,968.72 = 435.24 : x
2. Step 2: Convert to fraction form
   1,313.34/1,968.72 = 435.24/x
3. Step 3: Cross multiply
   1,313.34x = 1,968.72 × 435.24
4. Step 4: Simplify right side
   1,313.34x = 856,865.69
5. Step 5: Solve for x
   x = 856,865.69/1,313.34
6. Step 6: Final answer
   x = 652.43