Finding the Fourth Proportional to 1,443.02, 2,164.34 and 749.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.02 : 2,164.34 = 749.30 : x
2. Step 2: Convert to fraction form
   1,443.02/2,164.34 = 749.30/x
3. Step 3: Cross multiply
   1,443.02x = 2,164.34 × 749.30
4. Step 4: Simplify right side
   1,443.02x = 1,621,739.96
5. Step 5: Solve for x
   x = 1,621,739.96/1,443.02
6. Step 6: Final answer
   x = 1,123.85