Finding the Fourth Proportional to 2,579.08, 3,870.42 and 1,117.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,579.08 : 3,870.42 = 1,117.48 : x
2. Step 2: Convert to fraction form
   2,579.08/3,870.42 = 1,117.48/x
3. Step 3: Cross multiply
   2,579.08x = 3,870.42 × 1,117.48
4. Step 4: Simplify right side
   2,579.08x = 4,325,116.94
5. Step 5: Solve for x
   x = 4,325,116.94/2,579.08
6. Step 6: Final answer
   x = 1,677.00