Finding the Fourth Proportional to 1,015,789.58, 1,401,801 and 580,264.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015,789.58 : 1,401,801 = 580,264.58 : x
2. Step 2: Convert to fraction form
   1,015,789.58/1,401,801 = 580,264.58/x
3. Step 3: Cross multiply
   1,015,789.58x = 1,401,801 × 580,264.58
4. Step 4: Simplify right side
   1,015,789.58x = 813,415,468,508.58
5. Step 5: Solve for x
   x = 813,415,468,508.58/1,015,789.58
6. Step 6: Final answer
   x = 800,771.62