Finding the Fourth Proportional to 1,461.90, 2,018.79 and 938.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,461.90 : 2,018.79 = 938.85 : x
2. Step 2: Convert to fraction form
   1,461.90/2,018.79 = 938.85/x
3. Step 3: Cross multiply
   1,461.90x = 2,018.79 × 938.85
4. Step 4: Simplify right side
   1,461.90x = 1,895,333.42
5. Step 5: Solve for x
   x = 1,895,333.42/1,461.90
6. Step 6: Final answer
   x = 1,296.48