Finding the Fourth Proportional to 2,151.32, 3,228.96 and 1,667.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.32 : 3,228.96 = 1,667.48 : x
2. Step 2: Convert to fraction form
   2,151.32/3,228.96 = 1,667.48/x
3. Step 3: Cross multiply
   2,151.32x = 3,228.96 × 1,667.48
4. Step 4: Simplify right side
   2,151.32x = 5,384,226.22
5. Step 5: Solve for x
   x = 5,384,226.22/2,151.32
6. Step 6: Final answer
   x = 2,502.75