Finding the Fourth Proportional to 3,667.63, 5,502.56 and 1,328.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.63 : 5,502.56 = 1,328.74 : x
2. Step 2: Convert to fraction form
   3,667.63/5,502.56 = 1,328.74/x
3. Step 3: Cross multiply
   3,667.63x = 5,502.56 × 1,328.74
4. Step 4: Simplify right side
   3,667.63x = 7,311,471.57
5. Step 5: Solve for x
   x = 7,311,471.57/3,667.63
6. Step 6: Final answer
   x = 1,993.51