Finding the Fourth Proportional to 1,435.27, 1,981.10 and 931.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.27 : 1,981.10 = 931.11 : x
2. Step 2: Convert to fraction form
   1,435.27/1,981.10 = 931.11/x
3. Step 3: Cross multiply
   1,435.27x = 1,981.10 × 931.11
4. Step 4: Simplify right side
   1,435.27x = 1,844,622.02
5. Step 5: Solve for x
   x = 1,844,622.02/1,435.27
6. Step 6: Final answer
   x = 1,285.21