Finding the Fourth Proportional to 1,519.78, 2,096.90 and 930.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,519.78 : 2,096.90 = 930.10 : x
2. Step 2: Convert to fraction form
   1,519.78/2,096.90 = 930.10/x
3. Step 3: Cross multiply
   1,519.78x = 2,096.90 × 930.10
4. Step 4: Simplify right side
   1,519.78x = 1,950,326.69
5. Step 5: Solve for x
   x = 1,950,326.69/1,519.78
6. Step 6: Final answer
   x = 1,283.30