Finding the Fourth Proportional to 2,222.79, 3,330.27 and 1,981.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.79 : 3,330.27 = 1,981.47 : x
2. Step 2: Convert to fraction form
   2,222.79/3,330.27 = 1,981.47/x
3. Step 3: Cross multiply
   2,222.79x = 3,330.27 × 1,981.47
4. Step 4: Simplify right side
   2,222.79x = 6,598,830.10
5. Step 5: Solve for x
   x = 6,598,830.10/2,222.79
6. Step 6: Final answer
   x = 2,968.72