Finding the Fourth Proportional to 1,433.31, 1,977.94 and 803.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.31 : 1,977.94 = 803.94 : x
2. Step 2: Convert to fraction form
   1,433.31/1,977.94 = 803.94/x
3. Step 3: Cross multiply
   1,433.31x = 1,977.94 × 803.94
4. Step 4: Simplify right side
   1,433.31x = 1,590,145.08
5. Step 5: Solve for x
   x = 1,590,145.08/1,433.31
6. Step 6: Final answer
   x = 1,109.42