Finding the Fourth Proportional to 1,443.57, 2,165.97 and 981.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.57 : 2,165.97 = 981.06 : x
2. Step 2: Convert to fraction form
   1,443.57/2,165.97 = 981.06/x
3. Step 3: Cross multiply
   1,443.57x = 2,165.97 × 981.06
4. Step 4: Simplify right side
   1,443.57x = 2,124,946.53
5. Step 5: Solve for x
   x = 2,124,946.53/1,443.57
6. Step 6: Final answer
   x = 1,472.01