Finding the Fourth Proportional to 1,433.32, 1,978.08 and 803.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.32 : 1,978.08 = 803.92 : x
2. Step 2: Convert to fraction form
   1,433.32/1,978.08 = 803.92/x
3. Step 3: Cross multiply
   1,433.32x = 1,978.08 × 803.92
4. Step 4: Simplify right side
   1,433.32x = 1,590,218.07
5. Step 5: Solve for x
   x = 1,590,218.07/1,433.32
6. Step 6: Final answer
   x = 1,109.46