Finding the Fourth Proportional to 2,579.23, 3,870.33 and 1,118.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,579.23 : 3,870.33 = 1,118.53 : x
2. Step 2: Convert to fraction form
   2,579.23/3,870.33 = 1,118.53/x
3. Step 3: Cross multiply
   2,579.23x = 3,870.33 × 1,118.53
4. Step 4: Simplify right side
   2,579.23x = 4,329,080.21
5. Step 5: Solve for x
   x = 4,329,080.21/2,579.23
6. Step 6: Final answer
   x = 1,678.44