Finding the Fourth Proportional to 1,444.72, 1,991.64 and 1,030

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.72 : 1,991.64 = 1,030 : x
2. Step 2: Convert to fraction form
   1,444.72/1,991.64 = 1,030/x
3. Step 3: Cross multiply
   1,444.72x = 1,991.64 × 1,030
4. Step 4: Simplify right side
   1,444.72x = 2,051,389.20
5. Step 5: Solve for x
   x = 2,051,389.20/1,444.72
6. Step 6: Final answer
   x = 1,419.92