Finding the Fourth Proportional to 1,435.85, 1,981.49 and 838.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.85 : 1,981.49 = 838.38 : x
2. Step 2: Convert to fraction form
   1,435.85/1,981.49 = 838.38/x
3. Step 3: Cross multiply
   1,435.85x = 1,981.49 × 838.38
4. Step 4: Simplify right side
   1,435.85x = 1,661,241.59
5. Step 5: Solve for x
   x = 1,661,241.59/1,435.85
6. Step 6: Final answer
   x = 1,156.97