Finding the Fourth Proportional to 1,408.37, 1,943.73 and 818.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.37 : 1,943.73 = 818.79 : x
2. Step 2: Convert to fraction form
   1,408.37/1,943.73 = 818.79/x
3. Step 3: Cross multiply
   1,408.37x = 1,943.73 × 818.79
4. Step 4: Simplify right side
   1,408.37x = 1,591,502.56
5. Step 5: Solve for x
   x = 1,591,502.56/1,408.37
6. Step 6: Final answer
   x = 1,130.03