Finding the Fourth Proportional to 1,550.45, 2,321.57 and 933.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.45 : 2,321.57 = 933.31 : x
2. Step 2: Convert to fraction form
   1,550.45/2,321.57 = 933.31/x
3. Step 3: Cross multiply
   1,550.45x = 2,321.57 × 933.31
4. Step 4: Simplify right side
   1,550.45x = 2,166,728.22
5. Step 5: Solve for x
   x = 2,166,728.22/1,550.45
6. Step 6: Final answer
   x = 1,397.48