Finding the Fourth Proportional to 1,043.72, 1,440.48 and 601.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,043.72 : 1,440.48 = 601.61 : x
2. Step 2: Convert to fraction form
   1,043.72/1,440.48 = 601.61/x
3. Step 3: Cross multiply
   1,043.72x = 1,440.48 × 601.61
4. Step 4: Simplify right side
   1,043.72x = 866,607.17
5. Step 5: Solve for x
   x = 866,607.17/1,043.72
6. Step 6: Final answer
   x = 830.31