Finding the Fourth Proportional to 1,432.59, 1,976.89 and 803.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.59 : 1,976.89 = 803.11 : x
2. Step 2: Convert to fraction form
   1,432.59/1,976.89 = 803.11/x
3. Step 3: Cross multiply
   1,432.59x = 1,976.89 × 803.11
4. Step 4: Simplify right side
   1,432.59x = 1,587,664.20
5. Step 5: Solve for x
   x = 1,587,664.20/1,432.59
6. Step 6: Final answer
   x = 1,108.25