Finding the Fourth Proportional to 1,115,300.56, 1,672,010.40 and 483,738.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,115,300.56 : 1,672,010.40 = 483,738.72 : x
2. Step 2: Convert to fraction form
   1,115,300.56/1,672,010.40 = 483,738.72/x
3. Step 3: Cross multiply
   1,115,300.56x = 1,672,010.40 × 483,738.72
4. Step 4: Simplify right side
   1,115,300.56x = 808,816,170,722.69
5. Step 5: Solve for x
   x = 808,816,170,722.69/1,115,300.56
6. Step 6: Final answer
   x = 725,200.18