Finding the Fourth Proportional to 2,021.30, 3,025.55 and 1,957.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.30 : 3,025.55 = 1,957.30 : x
2. Step 2: Convert to fraction form
   2,021.30/3,025.55 = 1,957.30/x
3. Step 3: Cross multiply
   2,021.30x = 3,025.55 × 1,957.30
4. Step 4: Simplify right side
   2,021.30x = 5,921,909.02
5. Step 5: Solve for x
   x = 5,921,909.02/2,021.30
6. Step 6: Final answer
   x = 2,929.75