Finding the Fourth Proportional to 1,225,461.83, 1,691,018.78 and 709,112.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225,461.83 : 1,691,018.78 = 709,112.75 : x
2. Step 2: Convert to fraction form
   1,225,461.83/1,691,018.78 = 709,112.75/x
3. Step 3: Cross multiply
   1,225,461.83x = 1,691,018.78 × 709,112.75
4. Step 4: Simplify right side
   1,225,461.83x = 1,199,122,965,386.79
5. Step 5: Solve for x
   x = 1,199,122,965,386.79/1,225,461.83
6. Step 6: Final answer
   x = 978,506.99