Finding the Fourth Proportional to 1,002,172.70, 1,501,487.58 and 664,412.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002,172.70 : 1,501,487.58 = 664,412.42 : x
2. Step 2: Convert to fraction form
   1,002,172.70/1,501,487.58 = 664,412.42/x
3. Step 3: Cross multiply
   1,002,172.70x = 1,501,487.58 × 664,412.42
4. Step 4: Simplify right side
   1,002,172.70x = 997,607,002,873.01
5. Step 5: Solve for x
   x = 997,607,002,873.01/1,002,172.70
6. Step 6: Final answer
   x = 995,444.20