Finding the Fourth Proportional to 1,623.32, 2,240.67 and 1,404.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623.32 : 2,240.67 = 1,404.62 : x
2. Step 2: Convert to fraction form
   1,623.32/2,240.67 = 1,404.62/x
3. Step 3: Cross multiply
   1,623.32x = 2,240.67 × 1,404.62
4. Step 4: Simplify right side
   1,623.32x = 3,147,289.90
5. Step 5: Solve for x
   x = 3,147,289.90/1,623.32
6. Step 6: Final answer
   x = 1,938.80