Finding the Fourth Proportional to 1,550.37, 2,321.91 and 1,223.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.37 : 2,321.91 = 1,223.55 : x
2. Step 2: Convert to fraction form
   1,550.37/2,321.91 = 1,223.55/x
3. Step 3: Cross multiply
   1,550.37x = 2,321.91 × 1,223.55
4. Step 4: Simplify right side
   1,550.37x = 2,840,972.98
5. Step 5: Solve for x
   x = 2,840,972.98/1,550.37
6. Step 6: Final answer
   x = 1,832.45