Finding the Fourth Proportional to 2,191.50, 3,288.78 and 892.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.50 : 3,288.78 = 892.98 : x
2. Step 2: Convert to fraction form
   2,191.50/3,288.78 = 892.98/x
3. Step 3: Cross multiply
   2,191.50x = 3,288.78 × 892.98
4. Step 4: Simplify right side
   2,191.50x = 2,936,814.76
5. Step 5: Solve for x
   x = 2,936,814.76/2,191.50
6. Step 6: Final answer
   x = 1,340.09