Finding the Fourth Proportional to 1,435.42, 1,981.08 and 838.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.42 : 1,981.08 = 838.11 : x
2. Step 2: Convert to fraction form
   1,435.42/1,981.08 = 838.11/x
3. Step 3: Cross multiply
   1,435.42x = 1,981.08 × 838.11
4. Step 4: Simplify right side
   1,435.42x = 1,660,348.86
5. Step 5: Solve for x
   x = 1,660,348.86/1,435.42
6. Step 6: Final answer
   x = 1,156.70