Finding the Fourth Proportional to 1,434.61, 1,979.24 and 903.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.61 : 1,979.24 = 903.35 : x
2. Step 2: Convert to fraction form
   1,434.61/1,979.24 = 903.35/x
3. Step 3: Cross multiply
   1,434.61x = 1,979.24 × 903.35
4. Step 4: Simplify right side
   1,434.61x = 1,787,946.89
5. Step 5: Solve for x
   x = 1,787,946.89/1,434.61
6. Step 6: Final answer
   x = 1,246.29