Finding the Fourth Proportional to 1,433.96, 1,980.04 and 903.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.96 : 1,980.04 = 903.69 : x
2. Step 2: Convert to fraction form
   1,433.96/1,980.04 = 903.69/x
3. Step 3: Cross multiply
   1,433.96x = 1,980.04 × 903.69
4. Step 4: Simplify right side
   1,433.96x = 1,789,340.09
5. Step 5: Solve for x
   x = 1,789,340.09/1,433.96
6. Step 6: Final answer
   x = 1,247.84