Finding the Fourth Proportional to 1,074,111.68, 1,611,062.88 and 326,164.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074,111.68 : 1,611,062.88 = 326,164.16 : x
2. Step 2: Convert to fraction form
   1,074,111.68/1,611,062.88 = 326,164.16/x
3. Step 3: Cross multiply
   1,074,111.68x = 1,611,062.88 × 326,164.16
4. Step 4: Simplify right side
   1,074,111.68x = 525,470,970,962.38
5. Step 5: Solve for x
   x = 525,470,970,962.38/1,074,111.68
6. Step 6: Final answer
   x = 489,214.47