Finding the Fourth Proportional to 1,222,431.01, 1,686,923.69 and 671,144.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222,431.01 : 1,686,923.69 = 671,144.00 : x
2. Step 2: Convert to fraction form
   1,222,431.01/1,686,923.69 = 671,144.00/x
3. Step 3: Cross multiply
   1,222,431.01x = 1,686,923.69 × 671,144.00
4. Step 4: Simplify right side
   1,222,431.01x = 1,132,168,701,211.02
5. Step 5: Solve for x
   x = 1,132,168,701,211.02/1,222,431.01
6. Step 6: Final answer
   x = 926,161.64