Finding the Fourth Proportional to 3,451.70, 5,176.82 and 1,111.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,451.70 : 5,176.82 = 1,111.91 : x
2. Step 2: Convert to fraction form
   3,451.70/5,176.82 = 1,111.91/x
3. Step 3: Cross multiply
   3,451.70x = 5,176.82 × 1,111.91
4. Step 4: Simplify right side
   3,451.70x = 5,756,145.90
5. Step 5: Solve for x
   x = 5,756,145.90/3,451.70
6. Step 6: Final answer
   x = 1,667.63