Finding the Fourth Proportional to 2,019.31, 3,025.55 and 1,237.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.31 : 3,025.55 = 1,237.68 : x
2. Step 2: Convert to fraction form
   2,019.31/3,025.55 = 1,237.68/x
3. Step 3: Cross multiply
   2,019.31x = 3,025.55 × 1,237.68
4. Step 4: Simplify right side
   2,019.31x = 3,744,662.72
5. Step 5: Solve for x
   x = 3,744,662.72/2,019.31
6. Step 6: Final answer
   x = 1,854.43