Finding the Fourth Proportional to 1,435.46, 1,980.63 and 938.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.46 : 1,980.63 = 938.83 : x
2. Step 2: Convert to fraction form
   1,435.46/1,980.63 = 938.83/x
3. Step 3: Cross multiply
   1,435.46x = 1,980.63 × 938.83
4. Step 4: Simplify right side
   1,435.46x = 1,859,469.91
5. Step 5: Solve for x
   x = 1,859,469.91/1,435.46
6. Step 6: Final answer
   x = 1,295.39