Finding the Fourth Proportional to 1,313,010.72, 1,811,955.60 and 709,398.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,313,010.72 : 1,811,955.60 = 709,398.72 : x
2. Step 2: Convert to fraction form
   1,313,010.72/1,811,955.60 = 709,398.72/x
3. Step 3: Cross multiply
   1,313,010.72x = 1,811,955.60 × 709,398.72
4. Step 4: Simplify right side
   1,313,010.72x = 1,285,398,983,336.83
5. Step 5: Solve for x
   x = 1,285,398,983,336.83/1,313,010.72
6. Step 6: Final answer
   x = 978,970.67