Finding the Fourth Proportional to 3,451.06, 5,176.89 and 1,111.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,451.06 : 5,176.89 = 1,111.12 : x
2. Step 2: Convert to fraction form
   3,451.06/5,176.89 = 1,111.12/x
3. Step 3: Cross multiply
   3,451.06x = 5,176.89 × 1,111.12
4. Step 4: Simplify right side
   3,451.06x = 5,752,129.95
5. Step 5: Solve for x
   x = 5,752,129.95/3,451.06
6. Step 6: Final answer
   x = 1,666.77