Finding the Fourth Proportional to 3,057.96, 4,587.72 and 1,111.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,057.96 : 4,587.72 = 1,111.80 : x
2. Step 2: Convert to fraction form
   3,057.96/4,587.72 = 1,111.80/x
3. Step 3: Cross multiply
   3,057.96x = 4,587.72 × 1,111.80
4. Step 4: Simplify right side
   3,057.96x = 5,100,627.10
5. Step 5: Solve for x
   x = 5,100,627.10/3,057.96
6. Step 6: Final answer
   x = 1,667.98