Finding the Fourth Proportional to 2,007.18, 2,763.81 and 1,779.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.18 : 2,763.81 = 1,779.87 : x
2. Step 2: Convert to fraction form
   2,007.18/2,763.81 = 1,779.87/x
3. Step 3: Cross multiply
   2,007.18x = 2,763.81 × 1,779.87
4. Step 4: Simplify right side
   2,007.18x = 4,919,222.50
5. Step 5: Solve for x
   x = 4,919,222.50/2,007.18
6. Step 6: Final answer
   x = 2,450.81