Finding the Fourth Proportional to 2,191.29, 3,288.30 and 892.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.29 : 3,288.30 = 892.77 : x
2. Step 2: Convert to fraction form
   2,191.29/3,288.30 = 892.77/x
3. Step 3: Cross multiply
   2,191.29x = 3,288.30 × 892.77
4. Step 4: Simplify right side
   2,191.29x = 2,935,695.59
5. Step 5: Solve for x
   x = 2,935,695.59/2,191.29
6. Step 6: Final answer
   x = 1,339.71