Finding the Fourth Proportional to 3,123.10, 4,688.17 and 1,969.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.10 : 4,688.17 = 1,969.50 : x
2. Step 2: Convert to fraction form
   3,123.10/4,688.17 = 1,969.50/x
3. Step 3: Cross multiply
   3,123.10x = 4,688.17 × 1,969.50
4. Step 4: Simplify right side
   3,123.10x = 9,233,350.82
5. Step 5: Solve for x
   x = 9,233,350.82/3,123.10
6. Step 6: Final answer
   x = 2,956.47