Finding the Fourth Proportional to 1,591.31, 2,196.05 and 892.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.31 : 2,196.05 = 892.69 : x
2. Step 2: Convert to fraction form
   1,591.31/2,196.05 = 892.69/x
3. Step 3: Cross multiply
   1,591.31x = 2,196.05 × 892.69
4. Step 4: Simplify right side
   1,591.31x = 1,960,381.92
5. Step 5: Solve for x
   x = 1,960,381.92/1,591.31
6. Step 6: Final answer
   x = 1,231.93