Finding the Fourth Proportional to 1,043.64, 1,440.32 and 650.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,043.64 : 1,440.32 = 650.72 : x
2. Step 2: Convert to fraction form
   1,043.64/1,440.32 = 650.72/x
3. Step 3: Cross multiply
   1,043.64x = 1,440.32 × 650.72
4. Step 4: Simplify right side
   1,043.64x = 937,245.03
5. Step 5: Solve for x
   x = 937,245.03/1,043.64
6. Step 6: Final answer
   x = 898.05