Finding the Fourth Proportional to 2,123.75, 3,186.03 and 969.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.75 : 3,186.03 = 969.50 : x
2. Step 2: Convert to fraction form
   2,123.75/3,186.03 = 969.50/x
3. Step 3: Cross multiply
   2,123.75x = 3,186.03 × 969.50
4. Step 4: Simplify right side
   2,123.75x = 3,088,856.09
5. Step 5: Solve for x
   x = 3,088,856.09/2,123.75
6. Step 6: Final answer
   x = 1,454.43