Finding the Fourth Proportional to 2,021.15, 3,031.83 and 925.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.15 : 3,031.83 = 925.22 : x
2. Step 2: Convert to fraction form
   2,021.15/3,031.83 = 925.22/x
3. Step 3: Cross multiply
   2,021.15x = 3,031.83 × 925.22
4. Step 4: Simplify right side
   2,021.15x = 2,805,117.33
5. Step 5: Solve for x
   x = 2,805,117.33/2,021.15
6. Step 6: Final answer
   x = 1,387.88