Finding the Fourth Proportional to 2,673.78, 3,687.86 and 1,930.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,673.78 : 3,687.86 = 1,930.20 : x
2. Step 2: Convert to fraction form
   2,673.78/3,687.86 = 1,930.20/x
3. Step 3: Cross multiply
   2,673.78x = 3,687.86 × 1,930.20
4. Step 4: Simplify right side
   2,673.78x = 7,118,307.37
5. Step 5: Solve for x
   x = 7,118,307.37/2,673.78
6. Step 6: Final answer
   x = 2,662.26