Finding the Fourth Proportional to 875,009.72, 1,312,542.84 and 275,976.56

Step by Step Solution

1. Step 1: Write the proportion equation
   875,009.72 : 1,312,542.84 = 275,976.56 : x
2. Step 2: Convert to fraction form
   875,009.72/1,312,542.84 = 275,976.56/x
3. Step 3: Cross multiply
   875,009.72x = 1,312,542.84 × 275,976.56
4. Step 4: Simplify right side
   875,009.72x = 362,231,057,835.83
5. Step 5: Solve for x
   x = 362,231,057,835.83/875,009.72
6. Step 6: Final answer
   x = 413,973.75