Finding the Fourth Proportional to 1,302.28, 1,797.15 and 712.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,302.28 : 1,797.15 = 712.83 : x
2. Step 2: Convert to fraction form
   1,302.28/1,797.15 = 712.83/x
3. Step 3: Cross multiply
   1,302.28x = 1,797.15 × 712.83
4. Step 4: Simplify right side
   1,302.28x = 1,281,071.85
5. Step 5: Solve for x
   x = 1,281,071.85/1,302.28
6. Step 6: Final answer
   x = 983.72