Finding the Fourth Proportional to 1,443.58, 2,164.21 and 981.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.58 : 2,164.21 = 981.52 : x
2. Step 2: Convert to fraction form
   1,443.58/2,164.21 = 981.52/x
3. Step 3: Cross multiply
   1,443.58x = 2,164.21 × 981.52
4. Step 4: Simplify right side
   1,443.58x = 2,124,207.53
5. Step 5: Solve for x
   x = 2,124,207.53/1,443.58
6. Step 6: Final answer
   x = 1,471.49