Finding the Fourth Proportional to 1,061.20, 1,461.16 and 903.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.20 : 1,461.16 = 903.50 : x
2. Step 2: Convert to fraction form
   1,061.20/1,461.16 = 903.50/x
3. Step 3: Cross multiply
   1,061.20x = 1,461.16 × 903.50
4. Step 4: Simplify right side
   1,061.20x = 1,320,158.06
5. Step 5: Solve for x
   x = 1,320,158.06/1,061.20
6. Step 6: Final answer
   x = 1,244.02