Finding the Fourth Proportional to 3,451.50, 5,176.51 and 1,111.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,451.50 : 5,176.51 = 1,111.71 : x
2. Step 2: Convert to fraction form
   3,451.50/5,176.51 = 1,111.71/x
3. Step 3: Cross multiply
   3,451.50x = 5,176.51 × 1,111.71
4. Step 4: Simplify right side
   3,451.50x = 5,754,777.93
5. Step 5: Solve for x
   x = 5,754,777.93/3,451.50
6. Step 6: Final answer
   x = 1,667.33