Finding the Fourth Proportional to 2,153.86, 3,227.16 and 981.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.86 : 3,227.16 = 981.94 : x
2. Step 2: Convert to fraction form
   2,153.86/3,227.16 = 981.94/x
3. Step 3: Cross multiply
   2,153.86x = 3,227.16 × 981.94
4. Step 4: Simplify right side
   2,153.86x = 3,168,877.49
5. Step 5: Solve for x
   x = 3,168,877.49/2,153.86
6. Step 6: Final answer
   x = 1,471.26