Finding the Fourth Proportional to 1,446.52, 1,997.90 and 1,055.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.52 : 1,997.90 = 1,055.30 : x
2. Step 2: Convert to fraction form
   1,446.52/1,997.90 = 1,055.30/x
3. Step 3: Cross multiply
   1,446.52x = 1,997.90 × 1,055.30
4. Step 4: Simplify right side
   1,446.52x = 2,108,383.87
5. Step 5: Solve for x
   x = 2,108,383.87/1,446.52
6. Step 6: Final answer
   x = 1,457.56