Finding the Fourth Proportional to 1,015,399.56, 1,401,251.28 and 562,690.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015,399.56 : 1,401,251.28 = 562,690.56 : x
2. Step 2: Convert to fraction form
   1,015,399.56/1,401,251.28 = 562,690.56/x
3. Step 3: Cross multiply
   1,015,399.56x = 1,401,251.28 × 562,690.56
4. Step 4: Simplify right side
   1,015,399.56x = 788,470,867,443.92
5. Step 5: Solve for x
   x = 788,470,867,443.92/1,015,399.56
6. Step 6: Final answer
   x = 776,512.91