Finding the Fourth Proportional to 1,043.80, 1,440.72 and 601.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,043.80 : 1,440.72 = 601.76 : x
2. Step 2: Convert to fraction form
   1,043.80/1,440.72 = 601.76/x
3. Step 3: Cross multiply
   1,043.80x = 1,440.72 × 601.76
4. Step 4: Simplify right side
   1,043.80x = 866,967.67
5. Step 5: Solve for x
   x = 866,967.67/1,043.80
6. Step 6: Final answer
   x = 830.59