Finding the Fourth Proportional to 1,432.69, 1,976.99 and 803.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.69 : 1,976.99 = 803.07 : x
2. Step 2: Convert to fraction form
   1,432.69/1,976.99 = 803.07/x
3. Step 3: Cross multiply
   1,432.69x = 1,976.99 × 803.07
4. Step 4: Simplify right side
   1,432.69x = 1,587,651.47
5. Step 5: Solve for x
   x = 1,587,651.47/1,432.69
6. Step 6: Final answer
   x = 1,108.17