Finding the Fourth Proportional to 1,951.40, 2,928.58 and 719.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,951.40 : 2,928.58 = 719.98 : x
2. Step 2: Convert to fraction form
   1,951.40/2,928.58 = 719.98/x
3. Step 3: Cross multiply
   1,951.40x = 2,928.58 × 719.98
4. Step 4: Simplify right side
   1,951.40x = 2,108,519.03
5. Step 5: Solve for x
   x = 2,108,519.03/1,951.40
6. Step 6: Final answer
   x = 1,080.52