Finding the Fourth Proportional to 2,123.50, 3,182.88 and 953.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.50 : 3,182.88 = 953.28 : x
2. Step 2: Convert to fraction form
   2,123.50/3,182.88 = 953.28/x
3. Step 3: Cross multiply
   2,123.50x = 3,182.88 × 953.28
4. Step 4: Simplify right side
   2,123.50x = 3,034,175.85
5. Step 5: Solve for x
   x = 3,034,175.85/2,123.50
6. Step 6: Final answer
   x = 1,428.86