Finding the Fourth Proportional to 2,654.60, 3,983.72 and 923.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.60 : 3,983.72 = 923.22 : x
2. Step 2: Convert to fraction form
   2,654.60/3,983.72 = 923.22/x
3. Step 3: Cross multiply
   2,654.60x = 3,983.72 × 923.22
4. Step 4: Simplify right side
   2,654.60x = 3,677,849.98
5. Step 5: Solve for x
   x = 3,677,849.98/2,654.60
6. Step 6: Final answer
   x = 1,385.47