Finding the Fourth Proportional to 1,560,357.72, 2,339,602.56 and 648,440.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560,357.72 : 2,339,602.56 = 648,440.54 : x
2. Step 2: Convert to fraction form
   1,560,357.72/2,339,602.56 = 648,440.54/x
3. Step 3: Cross multiply
   1,560,357.72x = 2,339,602.56 × 648,440.54
4. Step 4: Simplify right side
   1,560,357.72x = 1,517,093,147,391.78
5. Step 5: Solve for x
   x = 1,517,093,147,391.78/1,560,357.72
6. Step 6: Final answer
   x = 972,272.66