Finding the Fourth Proportional to 1,180,003,696.02, 1,628,395,805.25 and 685,012,428.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180,003,696.02 : 1,628,395,805.25 = 685,012,428.18 : x
2. Step 2: Convert to fraction form
   1,180,003,696.02/1,628,395,805.25 = 685,012,428.18/x
3. Step 3: Cross multiply
   1,180,003,696.02x = 1,628,395,805.25 × 685,012,428.18
4. Step 4: Simplify right side
   1,180,003,696.02x = 1,115,471,364,592,428,800
5. Step 5: Solve for x
   x = 1,115,471,364,592,428,800/1,180,003,696.02
6. Step 6: Final answer
   x = 945,311,754.83