Finding the Fourth Proportional to 1,432.28, 1,976.51 and 802.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.28 : 1,976.51 = 802.83 : x
2. Step 2: Convert to fraction form
   1,432.28/1,976.51 = 802.83/x
3. Step 3: Cross multiply
   1,432.28x = 1,976.51 × 802.83
4. Step 4: Simplify right side
   1,432.28x = 1,586,797.51
5. Step 5: Solve for x
   x = 1,586,797.51/1,432.28
6. Step 6: Final answer
   x = 1,107.89