Finding the Fourth Proportional to 1,120,829.45, 1,681,119.59 and 401,142.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120,829.45 : 1,681,119.59 = 401,142.09 : x
2. Step 2: Convert to fraction form
   1,120,829.45/1,681,119.59 = 401,142.09/x
3. Step 3: Cross multiply
   1,120,829.45x = 1,681,119.59 × 401,142.09
4. Step 4: Simplify right side
   1,120,829.45x = 674,367,826,875.40
5. Step 5: Solve for x
   x = 674,367,826,875.40/1,120,829.45
6. Step 6: Final answer
   x = 601,668.55