Finding the Fourth Proportional to 2,651.69, 3,978.18 and 1,873.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,651.69 : 3,978.18 = 1,873.22 : x
2. Step 2: Convert to fraction form
   2,651.69/3,978.18 = 1,873.22/x
3. Step 3: Cross multiply
   2,651.69x = 3,978.18 × 1,873.22
4. Step 4: Simplify right side
   2,651.69x = 7,451,986.45
5. Step 5: Solve for x
   x = 7,451,986.45/2,651.69
6. Step 6: Final answer
   x = 2,810.28