Finding the Fourth Proportional to 1,591.39, 2,196.12 and 892.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.39 : 2,196.12 = 892.78 : x
2. Step 2: Convert to fraction form
   1,591.39/2,196.12 = 892.78/x
3. Step 3: Cross multiply
   1,591.39x = 2,196.12 × 892.78
4. Step 4: Simplify right side
   1,591.39x = 1,960,652.01
5. Step 5: Solve for x
   x = 1,960,652.01/1,591.39
6. Step 6: Final answer
   x = 1,232.04