Finding the Fourth Proportional to 1,089,096.32, 1,633,644.84 and 449,390.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089,096.32 : 1,633,644.84 = 449,390.72 : x
2. Step 2: Convert to fraction form
   1,089,096.32/1,633,644.84 = 449,390.72/x
3. Step 3: Cross multiply
   1,089,096.32x = 1,633,644.84 × 449,390.72
4. Step 4: Simplify right side
   1,089,096.32x = 734,144,830,871.89
5. Step 5: Solve for x
   x = 734,144,830,871.89/1,089,096.32
6. Step 6: Final answer
   x = 674,086.23