Finding the Fourth Proportional to 3,426.12, 5,139.54 and 1,118.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,426.12 : 5,139.54 = 1,118.04 : x
2. Step 2: Convert to fraction form
   3,426.12/5,139.54 = 1,118.04/x
3. Step 3: Cross multiply
   3,426.12x = 5,139.54 × 1,118.04
4. Step 4: Simplify right side
   3,426.12x = 5,746,211.30
5. Step 5: Solve for x
   x = 5,746,211.30/3,426.12
6. Step 6: Final answer
   x = 1,677.18