Finding the Fourth Proportional to 1,434.63, 1,978.99 and 903.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.63 : 1,978.99 = 903.32 : x
2. Step 2: Convert to fraction form
   1,434.63/1,978.99 = 903.32/x
3. Step 3: Cross multiply
   1,434.63x = 1,978.99 × 903.32
4. Step 4: Simplify right side
   1,434.63x = 1,787,658.56
5. Step 5: Solve for x
   x = 1,787,658.56/1,434.63
6. Step 6: Final answer
   x = 1,246.07