Finding the Fourth Proportional to 1,433.63, 1,976.51 and 935.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.63 : 1,976.51 = 935.40 : x
2. Step 2: Convert to fraction form
   1,433.63/1,976.51 = 935.40/x
3. Step 3: Cross multiply
   1,433.63x = 1,976.51 × 935.40
4. Step 4: Simplify right side
   1,433.63x = 1,848,835.74
5. Step 5: Solve for x
   x = 1,848,835.74/1,433.63
6. Step 6: Final answer
   x = 1,289.62