Finding the Fourth Proportional to 684,978.44, 1,027,873.56 and 381,626.50

Step by Step Solution

1. Step 1: Write the proportion equation
   684,978.44 : 1,027,873.56 = 381,626.50 : x
2. Step 2: Convert to fraction form
   684,978.44/1,027,873.56 = 381,626.50/x
3. Step 3: Cross multiply
   684,978.44x = 1,027,873.56 × 381,626.50
4. Step 4: Simplify right side
   684,978.44x = 392,263,789,145.34
5. Step 5: Solve for x
   x = 392,263,789,145.34/684,978.44
6. Step 6: Final answer
   x = 572,665.89