Finding the Fourth Proportional to 2,870.50, 3,961.29 and 1,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.50 : 3,961.29 = 1,628.50 : x
2. Step 2: Convert to fraction form
   2,870.50/3,961.29 = 1,628.50/x
3. Step 3: Cross multiply
   2,870.50x = 3,961.29 × 1,628.50
4. Step 4: Simplify right side
   2,870.50x = 6,450,960.77
5. Step 5: Solve for x
   x = 6,450,960.77/2,870.50
6. Step 6: Final answer
   x = 2,247.33