Finding the Fourth Proportional to 3,519.31, 5,279.27 and 922.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,519.31 : 5,279.27 = 922.25 : x
2. Step 2: Convert to fraction form
   3,519.31/5,279.27 = 922.25/x
3. Step 3: Cross multiply
   3,519.31x = 5,279.27 × 922.25
4. Step 4: Simplify right side
   3,519.31x = 4,868,806.76
5. Step 5: Solve for x
   x = 4,868,806.76/3,519.31
6. Step 6: Final answer
   x = 1,383.45