Finding the Fourth Proportional to 2,443.65, 3,663.24 and 981.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.65 : 3,663.24 = 981.81 : x
2. Step 2: Convert to fraction form
   2,443.65/3,663.24 = 981.81/x
3. Step 3: Cross multiply
   2,443.65x = 3,663.24 × 981.81
4. Step 4: Simplify right side
   2,443.65x = 3,596,605.66
5. Step 5: Solve for x
   x = 3,596,605.66/2,443.65
6. Step 6: Final answer
   x = 1,471.82