Finding the Fourth Proportional to 1,003.86, 1,507.48 and 675.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.86 : 1,507.48 = 675.81 : x
2. Step 2: Convert to fraction form
   1,003.86/1,507.48 = 675.81/x
3. Step 3: Cross multiply
   1,003.86x = 1,507.48 × 675.81
4. Step 4: Simplify right side
   1,003.86x = 1,018,768.37
5. Step 5: Solve for x
   x = 1,018,768.37/1,003.86
6. Step 6: Final answer
   x = 1,014.85