Finding the Fourth Proportional to 1,431.27, 2,141.69 and 846.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.27 : 2,141.69 = 846.53 : x
2. Step 2: Convert to fraction form
   1,431.27/2,141.69 = 846.53/x
3. Step 3: Cross multiply
   1,431.27x = 2,141.69 × 846.53
4. Step 4: Simplify right side
   1,431.27x = 1,813,014.73
5. Step 5: Solve for x
   x = 1,813,014.73/1,431.27
6. Step 6: Final answer
   x = 1,266.72