Finding the Fourth Proportional to 784,856.32, 1,083,069.72 and 445,317.28

Step by Step Solution

1. Step 1: Write the proportion equation
   784,856.32 : 1,083,069.72 = 445,317.28 : x
2. Step 2: Convert to fraction form
   784,856.32/1,083,069.72 = 445,317.28/x
3. Step 3: Cross multiply
   784,856.32x = 1,083,069.72 × 445,317.28
4. Step 4: Simplify right side
   784,856.32x = 482,309,661,760.76
5. Step 5: Solve for x
   x = 482,309,661,760.76/784,856.32
6. Step 6: Final answer
   x = 614,519.69