Finding the Fourth Proportional to 900,128.82, 1,350,242.82 and 269,091.84

Step by Step Solution

1. Step 1: Write the proportion equation
   900,128.82 : 1,350,242.82 = 269,091.84 : x
2. Step 2: Convert to fraction form
   900,128.82/1,350,242.82 = 269,091.84/x
3. Step 3: Cross multiply
   900,128.82x = 1,350,242.82 × 269,091.84
4. Step 4: Simplify right side
   900,128.82x = 363,339,324,880.59
5. Step 5: Solve for x
   x = 363,339,324,880.59/900,128.82
6. Step 6: Final answer
   x = 403,652.58