Finding the Fourth Proportional to 2,588.15, 3,870.31 and 1,922.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,588.15 : 3,870.31 = 1,922.31 : x
2. Step 2: Convert to fraction form
   2,588.15/3,870.31 = 1,922.31/x
3. Step 3: Cross multiply
   2,588.15x = 3,870.31 × 1,922.31
4. Step 4: Simplify right side
   2,588.15x = 7,439,906.65
5. Step 5: Solve for x
   x = 7,439,906.65/2,588.15
6. Step 6: Final answer
   x = 2,874.60