Finding the Fourth Proportional to 853,444.55, 1,280,796.72 and 404,164.55

Step by Step Solution

1. Step 1: Write the proportion equation
   853,444.55 : 1,280,796.72 = 404,164.55 : x
2. Step 2: Convert to fraction form
   853,444.55/1,280,796.72 = 404,164.55/x
3. Step 3: Cross multiply
   853,444.55x = 1,280,796.72 × 404,164.55
4. Step 4: Simplify right side
   853,444.55x = 517,652,629,980.28
5. Step 5: Solve for x
   x = 517,652,629,980.28/853,444.55
6. Step 6: Final answer
   x = 606,545.12