Finding the Fourth Proportional to 2,156.89, 3,235.64 and 924.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156.89 : 3,235.64 = 924.27 : x
2. Step 2: Convert to fraction form
   2,156.89/3,235.64 = 924.27/x
3. Step 3: Cross multiply
   2,156.89x = 3,235.64 × 924.27
4. Step 4: Simplify right side
   2,156.89x = 2,990,604.98
5. Step 5: Solve for x
   x = 2,990,604.98/2,156.89
6. Step 6: Final answer
   x = 1,386.54