Finding the Fourth Proportional to 1,432.88, 1,977.36 and 803.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.88 : 1,977.36 = 803.42 : x
2. Step 2: Convert to fraction form
   1,432.88/1,977.36 = 803.42/x
3. Step 3: Cross multiply
   1,432.88x = 1,977.36 × 803.42
4. Step 4: Simplify right side
   1,432.88x = 1,588,650.57
5. Step 5: Solve for x
   x = 1,588,650.57/1,432.88
6. Step 6: Final answer
   x = 1,108.71