Finding the Fourth Proportional to 1,432.58, 1,976.98 and 803.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.58 : 1,976.98 = 803.12 : x
2. Step 2: Convert to fraction form
   1,432.58/1,976.98 = 803.12/x
3. Step 3: Cross multiply
   1,432.58x = 1,976.98 × 803.12
4. Step 4: Simplify right side
   1,432.58x = 1,587,752.18
5. Step 5: Solve for x
   x = 1,587,752.18/1,432.58
6. Step 6: Final answer
   x = 1,108.32