Finding the Fourth Proportional to 1,321,395.57, 1,823,495.31 and 770,076.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,395.57 : 1,823,495.31 = 770,076.18 : x
2. Step 2: Convert to fraction form
   1,321,395.57/1,823,495.31 = 770,076.18/x
3. Step 3: Cross multiply
   1,321,395.57x = 1,823,495.31 × 770,076.18
4. Step 4: Simplify right side
   1,321,395.57x = 1,404,230,302,572.72
5. Step 5: Solve for x
   x = 1,404,230,302,572.72/1,321,395.57
6. Step 6: Final answer
   x = 1,062,687.31