Finding the Fourth Proportional to 2,445.30, 3,663.90 and 1,623.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,445.30 : 3,663.90 = 1,623.15 : x
2. Step 2: Convert to fraction form
   2,445.30/3,663.90 = 1,623.15/x
3. Step 3: Cross multiply
   2,445.30x = 3,663.90 × 1,623.15
4. Step 4: Simplify right side
   2,445.30x = 5,947,059.29
5. Step 5: Solve for x
   x = 5,947,059.29/2,445.30
6. Step 6: Final answer
   x = 2,432.04