Finding the Fourth Proportional to 3,111.98, 4,667.69 and 1,031.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.98 : 4,667.69 = 1,031.30 : x
2. Step 2: Convert to fraction form
   3,111.98/4,667.69 = 1,031.30/x
3. Step 3: Cross multiply
   3,111.98x = 4,667.69 × 1,031.30
4. Step 4: Simplify right side
   3,111.98x = 4,813,767.94
5. Step 5: Solve for x
   x = 4,813,767.94/3,111.98
6. Step 6: Final answer
   x = 1,546.85