Finding the Fourth Proportional to 1,591.36, 2,196.12 and 892.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.36 : 2,196.12 = 892.80 : x
2. Step 2: Convert to fraction form
   1,591.36/2,196.12 = 892.80/x
3. Step 3: Cross multiply
   1,591.36x = 2,196.12 × 892.80
4. Step 4: Simplify right side
   1,591.36x = 1,960,695.94
5. Step 5: Solve for x
   x = 1,960,695.94/1,591.36
6. Step 6: Final answer
   x = 1,232.09