Finding the Fourth Proportional to 1,672.31, 2,507.67 and 501.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.31 : 2,507.67 = 501.86 : x
2. Step 2: Convert to fraction form
   1,672.31/2,507.67 = 501.86/x
3. Step 3: Cross multiply
   1,672.31x = 2,507.67 × 501.86
4. Step 4: Simplify right side
   1,672.31x = 1,258,499.27
5. Step 5: Solve for x
   x = 1,258,499.27/1,672.31
6. Step 6: Final answer
   x = 752.55