Finding the Fourth Proportional to 2,025.40, 3,037.20 and 930.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,025.40 : 3,037.20 = 930.12 : x
2. Step 2: Convert to fraction form
   2,025.40/3,037.20 = 930.12/x
3. Step 3: Cross multiply
   2,025.40x = 3,037.20 × 930.12
4. Step 4: Simplify right side
   2,025.40x = 2,824,960.46
5. Step 5: Solve for x
   x = 2,824,960.46/2,025.40
6. Step 6: Final answer
   x = 1,394.77