Finding the Fourth Proportional to 2,151.67, 3,228.68 and 1,501.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.67 : 3,228.68 = 1,501.15 : x
2. Step 2: Convert to fraction form
   2,151.67/3,228.68 = 1,501.15/x
3. Step 3: Cross multiply
   2,151.67x = 3,228.68 × 1,501.15
4. Step 4: Simplify right side
   2,151.67x = 4,846,732.98
5. Step 5: Solve for x
   x = 4,846,732.98/2,151.67
6. Step 6: Final answer
   x = 2,252.54