Finding the Fourth Proportional to 2,151.18, 3,224.34 and 994.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.18 : 3,224.34 = 994.50 : x
2. Step 2: Convert to fraction form
   2,151.18/3,224.34 = 994.50/x
3. Step 3: Cross multiply
   2,151.18x = 3,224.34 × 994.50
4. Step 4: Simplify right side
   2,151.18x = 3,206,606.13
5. Step 5: Solve for x
   x = 3,206,606.13/2,151.18
6. Step 6: Final answer
   x = 1,490.63