Finding the Fourth Proportional to 1,443.39, 2,165.76 and 749.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.39 : 2,165.76 = 749.69 : x
2. Step 2: Convert to fraction form
   1,443.39/2,165.76 = 749.69/x
3. Step 3: Cross multiply
   1,443.39x = 2,165.76 × 749.69
4. Step 4: Simplify right side
   1,443.39x = 1,623,637.79
5. Step 5: Solve for x
   x = 1,623,637.79/1,443.39
6. Step 6: Final answer
   x = 1,124.88