Finding the Fourth Proportional to 1,667.72, 2,502.08 and 497.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.72 : 2,502.08 = 497.76 : x
2. Step 2: Convert to fraction form
   1,667.72/2,502.08 = 497.76/x
3. Step 3: Cross multiply
   1,667.72x = 2,502.08 × 497.76
4. Step 4: Simplify right side
   1,667.72x = 1,245,425.34
5. Step 5: Solve for x
   x = 1,245,425.34/1,667.72
6. Step 6: Final answer
   x = 746.78