Finding the Fourth Proportional to 1,012,065.57, 1,397,696.31 and 875,443.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,065.57 : 1,397,696.31 = 875,443.68 : x
2. Step 2: Convert to fraction form
   1,012,065.57/1,397,696.31 = 875,443.68/x
3. Step 3: Cross multiply
   1,012,065.57x = 1,397,696.31 × 875,443.68
4. Step 4: Simplify right side
   1,012,065.57x = 1,223,604,401,148.82
5. Step 5: Solve for x
   x = 1,223,604,401,148.82/1,012,065.57
6. Step 6: Final answer
   x = 1,209,016.92