Finding the Fourth Proportional to 2,981.13, 4,472.21 and 1,227.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,981.13 : 4,472.21 = 1,227.10 : x
2. Step 2: Convert to fraction form
   2,981.13/4,472.21 = 1,227.10/x
3. Step 3: Cross multiply
   2,981.13x = 4,472.21 × 1,227.10
4. Step 4: Simplify right side
   2,981.13x = 5,487,848.89
5. Step 5: Solve for x
   x = 5,487,848.89/2,981.13
6. Step 6: Final answer
   x = 1,840.86