Finding the Fourth Proportional to 1,623.72, 2,240.42 and 925.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623.72 : 2,240.42 = 925.08 : x
2. Step 2: Convert to fraction form
   1,623.72/2,240.42 = 925.08/x
3. Step 3: Cross multiply
   1,623.72x = 2,240.42 × 925.08
4. Step 4: Simplify right side
   1,623.72x = 2,072,567.73
5. Step 5: Solve for x
   x = 2,072,567.73/1,623.72
6. Step 6: Final answer
   x = 1,276.43